Holy Trinity

TRINITY, THE HOLY. The Athanasian Creed and Article i. give the teaching of our Church on the Holy Trinity. There we learn that in the unity of the Godhead there be three Persons; that is, though there be but one living and true God, yet there be three Persons, who are that one living and true God. Though the true God be but one in substance, yet He is three in subsistence, so as still to be but one substance. And these three Persons, every one of which is God, and yet all three but one God, are really related to one another; as they are termed in Scripture, one is the Father, the other the Son, the other the Holy Ghost.

The Father is the first Person in the Deity; not begotten, nor proceeding, but begetting; the Son, the second, not begetting nor proceeding, but begotten; the Holy Ghost, the third, not begotten, nor begetting, but proceeding. The first is called the Father, because He begot the second; the second is called the Son, because He is begotten of the Father; the third is called the Holy Ghost, because breathed both from the Father and the Son.

This is a great mystery to us, which, however, we are not called upon to understand, but only to believe  on the plain statement of Scripture.

The Father is God, John vi, 27; Gal. i. 1; 1 Thess. i. 1, &c.

The Son is God, John i. 1; xx. 28; Rom. ix. 5, &c.

The Holy Ghost is God. This, however, has to be proved by implication and analogy, as with Luke i. 35 compare Matt. i. 18; Acts v. 3, 4, with John iii. 6 compare 1 John v. 4; with 1 Cor. iii. 16 compare vi. 19, &c.

The unity of the Godhead is declared in many such passages as
Deut. vi. 4; Gal. iii. 20; John x. 30, &c.

The Son of God, our Lord Jesus Christ, "took man's nature in the womb of the blessed Virgin, of her substance; so that the two whole and perfect natures, that is to say the Godhead and Manhood, were joined together in one Person, never to be divided, whereof is one Christ very God and very Man." (Art. ii. and Luke i.)