Trinity

Christians are baptized “in the name” — singular — “of the Father and of the Son and of the Holy Spirit.” The Church confesses one God, one divine nature, in three really distinct Persons who are each wholly God. The Persons are distinguished only by their relations to one another: the Father begets, the Son is begotten, the Spirit proceeds. The Catechism calls the Trinity the central mystery of faith and life, the source of all the others, and the word “Trinity” itself was coined by the early Fathers to guard this belief.