ACC ~ John 17 v21a

UNITY OF WILL MAKES US ONE

HILARY OF POITIERS: [This passage] shows that since human beings cannot, so to speak, be fused back into God or themselves coalesce into one undistinguished mass, this oneness must arise from unity of will, as all perform actions pleasing to God and unite with one another in the harmonious agreement of their thoughts. Therefore, it is not nature that makes them one but will. ON THE TRINITY 8.5. [1]

[1] NPNF 2 9:139**; CCL 62A:318-19.

THE CHURCH ASSEMBLY IS ONE IN MANY

JEROME: “As we are Father, Son and Holy Spirit, one God,” [Jesus might say], “so may they be one people in themselves, that is, like dear children and partakers of the divine nature.” Call the church what you will—bride, sister, mother—its assembly is but one and never lacks husband, brother or son. [The church’s] faith is one, and it is not defiled by variety of doctrine or divided by heresies. [The church] continues a virgin. Wherever the Lamb goes, it follows him. It alone knows the song of Christ. AGAINST JOVINIANUS 2.19. [1]

[1] NPNF 2 6:403**; PL 23:328.

OUR UNITY AND THE GODHEAD’S UNITY COMPARED

AMBROSE: No separation, then, is to be made of the Word from God the Father, no separation in power, no separation in wisdom because of the unity of the divine substance. Again, God the Father is in the Son, as we often times find it written, yet not as sanctifying one who lacks sanctification or as filling a void, for the power of God knows no void. Nor, again, is the power of the one increased by the power of the other, for there are not two powers but one power. Nor does Godhead entertain Godhead, for there are not two Godheads but one Godhead. We … shall be one in Christ through power received [from another] and dwelling in us. The letter [1] [of the unity] is common, but the substance of God and the substance of humanity are different. We shall be one. The Father and the Son [already] are one. We shall be one by grace; the Son is so by substance. Again, unity by conjunction is one thing, unity by nature another. Finally, observe what it is that Scripture has already recorded: “That they may all be one, as you, Father, are in me, and I in you.” Now notice that he did not say, “You in us, and we in you” but “You in me, and I in you.” In this way he sets himself apart from his creatures. Further, he added “that they also may be in us,” in order to separate here his dignity and his Father’s dignity from us so that our union in the Father and the Son may appear the result not of nature but of grace, while the unity of the Father and the Son is the Son’s, not by grace but by natural right of sonship. ON THE CHRISTIAN FAITH 4.3.36-38. [2]

[1] Lat littera.

[2] NPNF 2 10:266-67**; CSEL 78:169-70 (On the Christian Faith 4.3.35-37).

UNITY FROM DIVERSITY IN GOD

CYRIL OF ALEXANDRIA: Our Lord Jesus Christ did not pray for the twelve apostles alone. He prayed for all who were destined in every age to yield to and obey the words that call them to be holy by believing and to be purified through participation in the Holy Spirit. … “May they all be one,” he prayed. “As you Father are in me and I am in you, may they also be one in us.” … The only Son shines out from the very substance of the Father and possesses the Father completely in his own nature. He became man, according to the Scriptures, blending himself, so to speak, with our nature by an inexplicable union with an earthly body. … In himself he somehow united totally disparate natures to make us sharers in the divine nature.

The communion and abiding presence of the Spirit has passed even to ourselves. This was experienced first through Christ and in Christ when he was seen to have become like us, that is, a human being anointed and sanctified. By nature, however, he was God, for he proceeded from the Father. It was with his own Spirit that he sanctified the temple of his body and also, in a way befitting it, the world of his creation. Through the mystery of Christ, then, sharing in the Holy Spirit and union with God has become possible also for us, for we are all sanctified in him.

By his own wisdom and the Father’s counsel he devised a way of bringing us all together and blending us into a unity with God and one another, even though the differences between us give us each in both body and soul a separate identity. For in Holy Communion he blesses with one body, which is his own, those who believe in him, and he makes them one body with himself and one another. Who could separate those who are united to Christ through that one sacred body or destroy their true union with one another? If “we all share one loaf,” we all become one body, for Christ cannot be divided.

So it is that the church is the body of Christ, and we are its members. For since we are all united to Christ through his sacred body, having received that one indivisible body into our own, our members are not our own but his. COMMENTARY ON THE GOSPEL OF JOHN 11.11. [1]

[1] LF 48:546, 549-50**.