CCC 253

The Trinity is One. We do not confess three Gods, but one God in three persons, the "consubstantial Trinity". Council of Constantinople II (553): DS — Denzinger–Schönmetzer (Enchiridion Symbolorum). The divine persons do not share the one divinity among themselves but each of them is God whole and entire: "The Father is that which the Son is, the Son that which the Father is, the Father and the Son that which the Holy Spirit is, i.e. by nature one God." Council of Toledo XI (675): DS — Denzinger–Schönmetzer (Enchiridion Symbolorum):26. In the words of the Fourth Lateran Council (1215), "Each of the persons is that supreme reality, viz., the divine substance, essence or nature." Lateran Council IV (1215): DS — Denzinger–Schönmetzer (Enchiridion Symbolorum).

Read the full chapter 1. I Believe in God the Father ¶198–421