Saint Ambrose of Milan on the Baptism of Christ

The Lord was Baptized, not to be cleansed Himself, but to cleanse the waters, so that those waters, cleansed by the flesh of Christ which knew no sin, might have the power of Baptism.

— St. Ambrose of Milan

Almighty ever-living God, who, when Christ had been baptized in the River Jordan and as the Holy Spirit descended upon him, solemnly declared him your beloved Son, grant that your children by adoption, reborn of water and the Holy Spirit, may always be well pleasing to you. Through our Lord Jesus Christ, your Son, who lives and reigns with you and the Holy Spirit, one God, for ever and ever.