Claves Regni Caelorum

The Book of the Prophet Isaiah 22:15-25

Thus says the Lord God of hosts, “Come, go to this steward, to Shebna, who is over the household, and say to him: What have you to do here and whom have you here, that you have hewn here a tomb for yourself, you who hew a tomb on the height, and carve a habitation for yourself in the rock? Behold, the Lord will hurl you away violently, O you strong man. He will seize firm hold on you, and whirl you round and round, and throw you like a ball into a wide land; there you shall die, and there shall be your splendid chariots, you shame of your master’s house. I will thrust you from your office, and you will be cast down from your station. In that day I will call my servant Eli′akim the son of Hilki′ah, and I will clothe him with your robe, and will bind your girdle on him, and will commit your authority to his hand; and he shall be a father to the inhabitants of Jerusalem and to the house of Judah. And I will place on his shoulder the key of the house of David; he shall open, and none shall shut; and he shall shut, and none shall open. And I will fasten him like a peg in a sure place, and he will become a throne of honor to his father’s house. And they will hang on him the whole weight of his father’s house, the offspring and issue, every small vessel, from the cups to all the flagons. In that day, says the Lord of hosts, the peg that was fastened in a sure place will give way; and it will be cut down and fall, and the burden that was upon it will be cut off, for the Lord has spoken.”

The Acts of the Apostles 1:15-26

In those days Peter stood up among the brethren (the company of persons was in all about a hundred and twenty), and said “Brethren, the scripture had to be fulfilled, which the Holy Spirit spoke beforehand by the mouth of David, concerning Judas who was guide to those who arrested Jesus. For he was numbered among us, and was allotted his share in this ministry. (Now this man bought a field with the reward of his wickedness; and falling headlong he burst open in the middle and all his bowels gushed out. And it became known to all the inhabitants of Jerusalem, so that the field was called in their language Akel′dama, that is, Field of Blood.) For it is written in the book of Psalms,

‘Let his habitation become desolate, and let there be no one to live in it’; and ‘His office let another take.’

So one of the men who have accompanied us during all the time that the Lord Jesus went in and out among us, beginning from the baptism of John until the day when he was taken up from us—one of these men must become with us a witness to his resurrection.” And they put forward two, Joseph called Barsab′bas, who was surnamed Justus, and Matthi′as. And they prayed and said, “Lord, who knowest the hearts of all men, show which one of these two thou hast chosen to take the place in this ministry and apostleship from which Judas turned aside, to go to his own place.” And they cast lots for them, and the lot fell on Matthi′as; and he was enrolled with the eleven apostles.

The Acts of the Apostles 15:6-12

The apostles and the elders were gathered together to consider this matter. And after there had been much debate, Peter rose and said to them, “Brethren, you know that in the early days God made choice among you, that by my mouth the Gentiles should hear the word of the gospel and believe. And God who knows the heart bore witness to them, giving them the Holy Spirit just as he did to us; and he made no distinction between us and them, but cleansed their hearts by faith. Now therefore why do you make trial of God by putting a yoke upon the neck of the disciples which neither our fathers nor we have been able to bear? But we believe that we shall be saved through the grace of the Lord Jesus, just as they will. And all the assembly kept silence; and they listened to Barnabas and Paul as they related what signs and wonders God had done through them among the Gentiles.

The Catechism of the Catholic Church 748-780

PART ONE THE PROFESSION OF FAITH

SECTION TWO THE PROFESSION OF THE CHRISTIAN FAITH

CHAPTER THREE I BELIEVE IN THE HOLY SPIRIT

ARTICLE 9 "I BELIEVE IN THE HOLY CATHOLIC CHURCH"

748 "Christ is the light of humanity; and it is, accordingly, the heart-felt desire of this sacred Council, being gathered together in the Holy Spirit, that, by proclaiming his Gospel to every creature, it may bring to all men that light of Christ which shines out visibly from the Church."135 These words open the Second Vatican Council's Dogmatic Constitution on the Church. By choosing this starting point, the Council demonstrates that the article of faith about the Church depends entirely on the articles concerning Christ Jesus. The Church has no other light than Christ's; according to a favorite image of the Church Fathers, the Church is like the moon, all its light reflected from the sun.

749 The article concerning the Church also depends entirely on the article about the Holy Spirit, which immediately precedes it. "Indeed, having shown that the Spirit is the source and giver of all holiness, we now confess that it is he who has endowed the Church with holiness."136 The Church is, in a phrase used by the Fathers, the place "where the Spirit flourishes."

750 To believe that the Church is "holy" and "catholic," and that she is "one" and "apostolic" (as the Nicene Creed adds), is inseparable from belief in God, the Father, the Son, and the Holy Spirit. In the Apostles' Creed we profess "one Holy Church" (Credo . . . Ecclesiam), and not to believe in the Church, so as not to confuse God with his works and to attribute clearly to God's goodness all the gifts he has bestowed on his Church.

Paragraph 1. THE CHURCH IN GOD'S PLAN

I. NAMES AND IMAGES OF THE CHURCH

751 The word "Church" (Latin ecclesia, from the Greek ek-ka-lein, to "call out of") means a convocation or an assembly. It designates the assemblies of the people, usually for a religious purpose. Ekklesia is used frequently in the Greek Old Testament for the assembly of the Chosen People before God, above all for their assembly on Mount Sinai where Israel received the Law and was established by God as his holy people. By calling itself "Church," the first community of Christian believers recognized itself as heir to that assembly. In the Church, God is "calling together" his people from all the ends of the earth. the equivalent Greek term Kyriake, from which the English word Church and the German Kirche are derived, means "what belongs to the Lord."

752 In Christian usage, the word "church" designates the liturgical assembly,141 but also the local community  or the whole universal community of believers. These three meanings are inseparable. "The Church" is the People that God gathers in the whole world. She exists in local communities and is made real as a liturgical, above all a Eucharistic, assembly. She draws her life from the word and the Body of Christ and so herself becomes Christ's Body.

Symbols of the Church

753 In Scripture, we find a host of interrelated images and figures through which Revelation speaks of the inexhaustible mystery of the Church. the images taken from the Old Testament are variations on a profound theme: the People of God. In the New Testament, all these images find a new center because Christ has become the head of this people, which henceforth is his Body. Around this center are grouped images taken "from the life of the shepherd or from cultivation of the land, from the art of building or from family life and marriage."

754 "The Church is, accordingly, a sheepfold, the sole and necessary gateway to which is Christ. It is also the flock of which God himself foretold that he would be the shepherd, and whose sheep, even though governed by human shepherds, are unfailingly nourished and led by Christ himself, the Good Shepherd and Prince of Shepherds, who gave his life for his sheep.

755 "The Church is a cultivated field, the tillage of God. On that land the ancient olive tree grows whose holy roots were the prophets and in which the reconciliation of Jews and Gentiles has been brought about and will be brought about again. That land, like a choice vineyard, has been planted by the heavenly cultivator. Yet the true vine is Christ who gives life and fruitfulness to the branches, that is, to us, who through the Church remain in Christ, without whom we can do nothing.

756 "Often, too, the Church is called the building of God. the Lord compared himself to the stone which the builders rejected, but which was made into the comer-stone. On this foundation the Church is built by the apostles and from it the Church receives solidity and unity. This edifice has many names to describe it: the house of God in which his family dwells; the household of God in the Spirit; the dwelling-place of God among men; and, especially, the holy temple. This temple, symbolized in places of worship built out of stone, is praised by the Fathers and, not without reason, is compared in the liturgy to the Holy City, the New Jerusalem. As living stones we here on earth are built into it. It is this holy city that is seen by John as it comes down out of heaven from God when the world is made anew, prepared like a bride adorned for her husband.

757 "The Church, further, which is called 'that Jerusalem which is above' and 'our mother', is described as the spotless spouse of the spotless lamb. It is she whom Christ 'loved and for whom he delivered himself up that he might sanctify her.' It is she whom he unites to himself by an unbreakable alliance, and whom he constantly 'nourishes and cherishes.'"

II. THE CHURCH'S ORIGIN, FOUNDATION AND MISSION

758 We begin our investigation of the Church's mystery by meditating on her origin in the Holy Trinity's plan and her progressive realization in history.

A plan born in the Father's heart

759 "The eternal Father, in accordance with the utterly gratuitous and mysterious design of his wisdom and goodness, created the whole universe and chose to raise up men to share in his own divine life," to which he calls all men in his Son. "The Father . . . determined to call together in a holy Church those who should believe in Christ." This "family of God" is gradually formed and takes shape during the stages of human history, in keeping with the Father's plan. In fact, "already present in figure at the beginning of the world, this Church was prepared in marvellous fashion in the history of the people of Israel and the old Advance. Established in this last age of the world and made manifest in the outpouring of the Spirit, it will be brought to glorious completion at the end of time."

The Church - foreshadowed from the world's beginning

760 Christians of the first centuries said, "The world was created for the sake of the Church." God created the world for the sake of communion with his divine life, a communion brought about by the "convocation" of men in Christ, and this "convocation" is the Church. the Church is the goal of all things, and God permitted such painful upheavals as the angels' fall and man's sin only as occasions and means for displaying all the power of his arm and the whole measure of the love he wanted to give the world:

Just as God's will is creation and is called "the world," so his intention is the salvation of men, and it is called "the Church."

The Church - prepared for in the Old Covenant

761 The gathering together of the People of God began at the moment when sin destroyed the communion of men with God, and that of men among themselves. the gathering together of the Church is, as it were, God's reaction to the chaos provoked by sin. This reunification is achieved secretly in the heart of all peoples: "In every nation anyone who fears him and does what is right is acceptable" to God.

762 The remote preparation for this gathering together of the People of God begins when he calls Abraham and promises that he will become the father of a great people. Its immediate preparation begins with Israel's election as the People of God. By this election, Israel is to be the sign of the future gathering of All nations. But the prophets accuse Israel of breaking the covenant and behaving like a prostitute. They announce a new and eternal covenant. "Christ instituted this New Covenant."

The Church - instituted by Christ Jesus

763 It was the Son's task to accomplish the Father's plan of salvation in the fullness of time. Its accomplishment was the reason for his being sent. "The Lord Jesus inaugurated his Church by preaching the Good News, that is, the coming of the Reign of God, promised over the ages in the scriptures." To fulfill the Father's will, Christ ushered in the Kingdom of heaven on earth. the Church "is the Reign of Christ already present in mystery."

764 "This Kingdom shines out before men in the word, in the works and in the presence of Christ." To welcome Jesus' word is to welcome "the Kingdom itself." The seed and beginning of the Kingdom are the "little flock" of those whom Jesus came to gather around him, the flock whose shepherd he is. They form Jesus' true family. To those whom he thus gathered around him, he taught a new "way of acting" and a prayer of their own.

765 The Lord Jesus endowed his community with a structure that will remain until the Kingdom is fully achieved. Before all else there is the choice of the Twelve with Peter as their head.1Representing the twelve tribes of Israel, they are the foundation stones of the new Jerusalem. The Twelve and the other disciples share in Christ's mission and his power, but also in his lot. By all his actions, Christ prepares and builds his Church.

766 The Church is born primarily of Christ's total self-giving for our salvation, anticipated in the institution of the Eucharist and fulfilled on the cross. "The origin and growth of the Church are symbolized by the blood and water which flowed from the open side of the crucified Jesus." "For it was from the side of Christ as he slept the sleep of death upon the cross that there came forth the 'wondrous sacrament of the whole Church.'"As Eve was formed from the sleeping Adam's side, so the Church was born from the pierced heart of Christ hanging dead on the cross.

The Church - revealed by the Holy Spirit

767 "When the work which the Father gave the Son to do on earth was accomplished, the Holy Spirit was sent on the day of Pentecost in order that he might continually sanctify the Church." Then "the Church was openly displayed to the crowds and the spread of the Gospel among the nations, through preaching, was begun." As the "convocation" of all men for salvation, the Church in her very nature is missionary, sent by Christ to all the nations to make disciples of them.

768 So that she can fulfill her mission, the Holy Spirit "bestows upon [the Church] varied hierarchic and charismatic gifts, and in this way directs her."177 "Henceforward the Church, endowed with the gifts of her founder and faithfully observing his precepts of charity, humility and self-denial, receives the mission of proclaiming and establishing among all peoples the Kingdom of Christ and of God, and she is on earth the seed and the beginning of that kingdom."

The Church - perfected in glory

769 "The Church . . . will receive its perfection only in the glory of heaven,"179 at the time of Christ's glorious return. Until that day, "the Church progresses on her pilgrimage amidst this world's persecutions and God's consolations."180 Here below she knows that she is in exile far from the Lord, and longs for the full coming of the Kingdom, when she will "be united in glory with her king."181 The Church, and through her the world, will not be perfected in glory without great trials. Only then will "all the just from the time of Adam, 'from Abel, the just one, to the last of the elect,' . . . be gathered together in the universal Church in the Father's presence."

III. THE MYSTERY OF THE CHURCH

770 The Church is in history, but at the same time she transcends it. It is only "with the eyes of faith"183 that one can see her in her visible reality and at the same time in her spiritual reality as bearer of divine life.

The Church - both visible and spiritual

771 "The one mediator, Christ, established and ever sustains here on earth his holy Church, the community of faith, hope, and charity, as a visible organization through which he communicates truth and grace to all men."184 The Church is at the same time:

- a "society structured with hierarchical organs and the mystical body of Christ;

- the visible society and the spiritual community;

- the earthly Church and the Church endowed with heavenly riches."185

These dimensions together constitute "one complex reality which comes together from a human and a divine element":186

The Church is essentially both human and divine, visible but endowed with invisible realities, zealous in action and dedicated to contemplation, present in the world, but as a pilgrim, so constituted that in her the human is directed toward and subordinated to the divine, the visible to the invisible, action to contemplation, and this present world to that city yet to come, the object of our quest.187

O humility! O sublimity! Both tabernacle of cedar and sanctuary of God; earthly dwelling and celestial palace; house of clay and royal hall; body of death and temple of light; and at last both object of scorn to the proud and bride of Christ! She is black but beautiful, O daughters of Jerusalem, for even if the labor and pain of her long exile may have discolored her, yet heaven's beauty has adorned her.188

The Church - mystery of men's union with God

772 It is in the Church that Christ fulfills and reveals his own mystery as the purpose of God's plan: "to unite all things in him."189 St. Paul calls the nuptial union of Christ and the Church "a great mystery." Because she is united to Christ as to her bridegroom, she becomes a mystery in her turn.190 Contemplating this mystery in her, Paul exclaims: "Christ in you, the hope of glory."191

773 In the Church this communion of men with God, in the "love [that] never ends," is the purpose which governs everything in her that is a sacramental means, tied to this passing world.192

"[The Church's] structure is totally ordered to the holiness of Christ's members. and holiness is measured according to the 'great mystery' in which the Bride responds with the gift of love to the gift of the Bridegroom."193 Mary goes before us all in the holiness that is the Church's mystery as "the bride without spot or wrinkle."194 This is why the "Marian" dimension of the Church precedes the "Petrine."195

The universal Sacrament of Salvation

774 The Greek word mysterion was translated into Latin by two terms: mystenum and sacramentum. In later usage the term sacramentum emphasizes the visible sign of the hidden reality of salvation which was indicated by the term mystenum. In this sense, Christ himself is the mystery of salvation: "For there is no other mystery of God, except Christ."196 The saving work of his holy and sanctifying humanity is the sacrament of salvation, which is revealed and active in the Church's sacraments (which the Eastern Churches also call "the holy mysteries"). the seven sacraments are the signs and instruments by which the Holy Spirit spreads the grace of Christ the head throughout the Church which is his Body. the Church, then, both contains and communicates the invisible grace she signifies. It is in this analogical sense, that the Church is called a "sacrament."

775 "The Church, in Christ, is like a sacrament - a sign and instrument, that is, of communion with God and of unity among all men."197 The Church's first purpose is to be the sacrament of the inner union of men with God. Because men's communion with one another is rooted in that union with God, the Church is also the sacrament of the unity of the human race. In her, this unity is already begun, since she gathers men "from every nation, from all tribes and peoples and tongues";198 at the same time, the Church is the "sign and instrument" of the full realization of the unity yet to come.

776 As sacrament, the Church is Christ's instrument. "She is taken up by him also as the instrument for the salvation of all," "the universal sacrament of salvation," by which Christ is "at once manifesting and actualizing the mystery of God's love for men."199 The Church "is the visible plan of God's love for humanity," because God desires "that the whole human race may become one People of God, form one Body of Christ, and be built up into one temple of the Holy Spirit."200

IN BRIEF

777 The word "Church" means "convocation." It designates the assembly of those whom God's Word "convokes," i.e., gathers together to form the People of God, and who themselves, nourished with the Body of Christ, become the Body of Christ.

778 The Church is both the means and the goal of God's plan: prefigured in creation, prepared for in the Old Covenant, founded by the words and actions of Jesus Christ, fulfilled by his redeeming cross and his Resurrection, the Church has been manifested as the mystery of salvation by the outpouring of the Holy Spirit. She will be perfected in the glory of heaven as the assembly of all the redeemed of the earth (cf Rev 14:4).

779 The Church is both visible and spiritual, a hierarchical society and the Mystical Body of Christ. She is one, yet formed of two components, human and divine. That is her mystery, which only faith can accept.

780 The Church in this world is the sacrament of salvation, the sign and the instrument of the communion of God and men.

Supreme Pontiffs in Order of Papacy

Tertullian (c. 160 - 240 AD)

“Was anything withheld from the knowledge of Peter, who is called ‘the rock on which the Church would be built’ [Matt. 16:18] with the power of ‘loosing and binding in heaven and on earth’ [Matt. 16:19]?” (Demurrer Against the Heretics 22 [A.D. 200])

“The Lord said to Peter, ‘On this rock I will build my Church, I have given you the keys of the kingdom of heaven [and] whatever you shall have bound or loosed on earth will be bound or loosed in heaven’ [Matt. 16:18–19]. . . . What kind of man are you, subverting and changing what was the manifest intent of the Lord when he conferred this personally upon Peter? Upon you, he says, I will build my Church; and I will give to you the keys” (Modesty 21:9–10 [A.D. 220]).

St. Cyprian of Carthage (c. 210 - 258 AD)

“The Lord says to Peter: ‘I say to you,’ he says, ‘that you are Peter, and upon this rock I will build my Church, and the gates of hell will not overcome it. And to you I will give the keys of the kingdom of heaven . . . ’ [Matt. 16:18–19]. On him [Peter] he builds the Church, and to him he gives the command to feed the sheep [John 21:17], and although he assigns a like power to all the apostles, yet he founded a single chair [cathedra], and he established by his own authority a source and an intrinsic reason for that unity. Indeed, the others were that also which Peter was [i.e., apostles], but a primacy is given to Peter, whereby it is made clear that there is but one Church and one chair. . . . If someone does not hold fast to this unity of Peter, can he imagine that he still holds the faith? If he [should] desert the chair of Peter upon whom the Church was built, can he still be confident that he is in the Church?” (The Unity of the Catholic Church 4; 1st edition [A.D. 251]).

“There is one God and one Christ, and one Church, and one chair founded on Peter by the word of the Lord. It is not possible to set up another altar or for there to be another priesthood besides that one altar and that one priesthood. Whoever has gathered elsewhere is scattering” (Letters 43[40]:5 [A.D. 253]).

“There [John 6:68–69] speaks Peter, upon whom the Church would be built, teaching in the name of the Church and showing that even if a stubborn and proud multitude withdraws because it does not wish to obey, yet the Church does not withdraw from Christ. The people joined to the priest and the flock clinging to their shepherd are the Church. You ought to know, then, that the bishop is in the Church and the Church in the bishop, and if someone is not with the bishop, he is not in the Church. They vainly flatter themselves who creep up, not having peace with the priests of God, believing that they are

secretly [i.e., invisibly] in communion with certain individuals. For the Church, which is one and Catholic, is not split nor divided, but it is indeed united and joined by the cement of priests who adhere one to another” (ibid., 66[69]:8).

St. Augustine of Hippo (412 AD)

“If the very order of episcopal succession is to be considered, how much more surely, truly, and safely do we number them [the bishops of Rome] from Peter himself, to whom, as to one representing the whole Church, the Lord said, ‘Upon this rock I will build my Church, and the gates of hell shall not conquer it.’ Peter was succeeded by Linus, Linus by Clement. … In this order of succession a Donatist bishop is not to be found” (Letters 53:1:2 [A.D. 412]).

Catholic Answers - Defending the Papacy: https://www.catholic.com/magazine/print-edition/defending-the-papacy

Lonely Pilgrim - A Biblical Argument for the Authority of the Papacy: https://lonelypilgrim.com/2013/03/22/a-biblical-argument-for-the-authority-of-the-papacy/

Scholastic Answers - A Defense of Papal Primacy: https://www.christianbwagner.com/post/a-defense-of-papal-primacy 

Catholic Answers - What the Early Church Believed: The Authority of the Pope: https://www.catholic.com/tract/the-authority-of-the-pope-part-i

The Reproach of Christ - Defending the Supreme Authority of the Pope: https://ronconte.com/2021/12/26/defending-the-supreme-authority-of-the-pope/

EWTN - Papal Infallibility: https://www.ewtn.com/catholicism/library/papal-infallibility-1084

St. Paul Center - When Do We Have to Obey the Pope?: https://stpaulcenter.com/when-do-we-have-to-obey-the-pope/