54. It is plain, therefore, that the Son is not unlike the Father, and so we may confess the more readily that He is also eternal, seeing that He Who is like the Eternal must needs be eternal. But if we say that the Father is eternal, and yet deny this of the Son, we say that the Son is unlike the Father, for the temporal differeth from the eternal. The Prophet proclaims Him eternal, and the Apostle proclaims Him eternal; the Testaments, Old and New alike, are full of witness to the Son’s eternity.