Cyril of Alexandria, on Heb 13:8

“Jesus Christ, yesterday, and today; and the same for ever.”

“The natural properties of the Word who came forth from the Father were maintained even when he became flesh. It is foolish therefore to dare to introduce a breach. For the Lord Jesus Christ is one and through him the Father created all things. He is composed of human properties and of others that are above the human, yielding a kind of middle term. He is, in fact, a mediator between God and humankind, according to the Scriptures, God by nature even when incarnate, truly, not purely man like us, remaining what he was even when he had become flesh. For it is written, "Jesus Christ is the same yesterday and today and forever."”

Imported from an open dataset — not yet checked against the printed edition.