Cyril of Alexandria
Catena Aurea · Lukasevangelium 11
And it came to pass, that, as he was praying in a certain place, when he ceased, one of his disciples said unto him, Lord, teach us to pray, as John also taught his disciples. And he said unto them, When ye pray, say, Our Father which art in heaven, Hallowed be thy name. Thy kingdom come. Thy will be done, as in heaven, so in earth. Give us day by day our daily bread. And forgive us our sins; for we also forgive every one that is indebted to us. And lead us not into temptation; but deliver us from evil.
Now whereas He possesses every good in abundance, why does He pray, since He is full, and has altogether need of nothing? To this we answer, that it befits Him, according to the manner of His dispensation in the flesh, to follow human observances at the time convenient for them. For if He eats and drinks, He rightly was used to pray, that He might teach us not to be lukewarm in this duty, but to be the more diligent and earnest in our prayers.