John Chrysostom

We must first turn our words to prayer. I say this because, sometimes, when prayer accompanies a teaching, it will serve to provide us with a demonstration of the things we are seeking to prove.… And Paul often does this at the beginning of his epistles. He first mentions God and then does not go on to his teaching until he pays to God the glory and praise due to him. Listen: "To the King of ages, the immortal, the invisible, the only God of wisdom, be honor and glory for ever and ever! Amen."