19 We believe in one true God, Father, and Son and Holy Spirit, maker of the visible and the invisible, by whom were created all things in heaven and on earth. This God alone and this Trinity alone is of divine name [divine substance]. The Father is not [himself] the Son, but has the Son, who is not the Father. The Son is not the Father, but the Son is of God by nature [is of the Father's nature]. The Spirit is also the Paraclete, who is himself neither the Father, nor the Son, but proceeds from the Father [proceeding from the Father and the Son]. Therefore the Father is unbegotten, the Son is begotten, the Paraclete is not begotten, but proceeding from the Father [and the Son]. The Father is he whose words were heard from the heavens: This is my beloved Son, in whom I am well pleased, hear ye him. [Matt. 17:5; 2 Peter 1:17. Cf- Matt.  3:17]. The Son is he who says: I came forth from the Father, and am come into the world [cf. John 16:28]. The Paraclete himself [the Spirit] is he, concerning whom the Son says: Unless I go to the Father, the Paraclete will not come to you [John 16:17]. This Trinity, though distinct in persons, is one substance [united], virtue, power, majesty [in virtue and in power and in majesty] indivisible, not different. [We believe] there is no divine nature except that [this], either of angel or of spirit or of any virtue, which is believed to be God.