Galatians 1:11

"For I make known to you, brethren, as touching the Gospel which was preached by me that it is not after man. For neither did I receive it from man, nor was I taught it, but it came to me through revelation of Jesus Christ." You observe how sedulously he affirms that he was taught of Christ, who Himself, without human intervention, condescended to reveal to him all knowledge. And if he were asked for his proof that God Himself thus immediately revealed to him these ineffable mysteries, he would instance his former manner of life, arguing that his conversion would not have been so sudden, had it not been by Divine revelation. For when men have been vehement and eager on the contrary side, their conviction, if it is effected by human means, requires much time and ingenuity. It is clear therefore that he, whose conversion is sudden, and who has been sobered in the very height of his madness, must have been vouchsafed a Divine revelation and teaching, and so have at once arrived at complete sanity. On this account he is obliged to relate his former life, and to call the Galatians as witnesses of past events. That the Only-Begotten Son of God had Himself from heaven vouchsafed to call me, says he, you who were not present, could not know, but that I was a persecutor you do know. For my violence even reached your ears, and the distance between Palestine and Galatia is so great, that the report would not have extended thither, had not my acts exceeded all bounds and endurance.