How impious the Arians are, in attacking that on which
human happiness depends. John ever unites the Son with the
Father, especially where he says: “That they may know Thee,
the only true God, etc.” In that place, then, we must
understand the words “true God” also of the Son; for it
cannot be denied that He is God, and it cannot be said He is a false
god, and least of all that He is God by appellation only. This
last point being proved from the Apostle’s words, we rightly
confess that Christ is true God.