10. We say, then, that there is one God, not two or three Gods, this being the error into which the impious heresy of the Arians doth run with its blasphemies. For it says that there are three Gods, in that it divides the Godhead of the Trinity; whereas the Lord, in saying, “Go, baptize the nations in the name of the Father and of the Son and of the Holy Spirit,” hath shown that the Trinity is of one power. We confess Father, Son, and Spirit, understanding in a perfect Trinity both fulness of Divinity and unity of power. Or “perfect fulness of Divinity, and perfect unity of power.”