For the divinest prophets lived according to Jesus Christ. On this account also they were persecuted, being inspired by grace to fully convince the unbelieving that there is one God, the Almighty, who has manifested Himself by Jesus Christ His Son, who is His Word, not spoken, but essential. For He is not the voice of an articulate utterance, but a substance begotten by divine power, who has in all things pleased Him that sent Him.
–Epistle to the Magnesians, Chapter VIII (emphasis mine)