CCC 232

Christians are baptized "in the name of the Father and of the Son and of the Holy Spirit"⁵³ Mt 28:19. Before receiving the sacrament, they respond to a three-part question when asked to confess the Father, the Son and the Spirit: "I do." "The faith of all Christians rests on the Trinity."⁵⁴ St. Caesarius of Arles, Sermo 9, Exp. symb.: CCL 103, 47.