Who, though he was in the form of God, did not count equality with God a thing to be grasped, emptied himself, taking on the form of a servant, being born in the likeness of men. Philippians 2:6-7
“Since he is emptied on our account when he came down, he is for this reason, able to be received.”
Gregory of Nazianzus (c. 329-389) One of the Four Doctors of the Eastern Church, Archbishop of Constantinople. Oration 37.2. SC 318:276. ACCS.P.233.