Irenaeus

Paul himself also-after that the Lord spoke to him out of heaven, and showed him that, in persecuting His disciples, he persecuted his own Lord, and sent Ananias to him that he might recover his sight, and be baptized-"preached," it is said, "Jesus in the synagogues at Damascus, with all freedom of speech, that this is the Son of God, the Christ." This is the mystery which he says was made known to him by revelation, that He who suffered under Pontius Pilate, the same is Lord of all, and King, and God, and Judge, receiving power from Him who is the God of all, because He became "obedient unto death, even the death of the cross."