Roman Catechism 34.19

Chapter 34 — Part IV: Prayer — The Lord's Prayer: Introduction and Our Father Who Art in Heaven

Section 19. Accordingly the pastor should instruct his spiritual children and constantly recall to their minds the surpassing love of God for us, so that they may be fully alive to the fact that having been redeemed in a wonderful manner they are thereby made the sons of God. To them, says St. John, He gave power to be made the sons of God . . . and they are born of God.