CCC 51 “It pleased God, in his goodness and wisdom, to reveal himself and to make known the mystery of his will. His will was that men should have access to the Father, through Christ, the Word made flesh, in the Holy Spirit, and thus become sharers in the divine nature.”1

CCC 2305 Earthly peace is the image and fruit of the peace of Christ, the messianic “Prince of Peace.”2 By the blood of his Cross, “in his own person he killed the hostility,”3 he reconciled men with God and made his Church the sacrament of the unity of the human race and of its union with God. “He is our peace.”4 He has declared: “Blessed are the peacemakers.”5

1 DV 2; cf. Eph 1:9; 2:18; 2 Pt 1:4.
2 Isa 9:5.
3 Eph 2:16 J.B.; cf. Col 1:20-22.
4 Eph 2:14.
5 Mt 5:9.