Galatians 1:12

For neither did I receive it from man, nor was I taught it, but it came to me through revelation of Jesus Christ. [I want you to understand that the gospel which I preach was in no sense my own invention or production, for it was of a nature not after man; i. e., not such as man could design or devise. And the method by which I received it proves that it was not of a human origin, and hence also not of a human character; for I did not receive it from man, nor did I acquire it by the slow and progressive method of teaching, but it came to me through revelation of Jesus Christ. Jesus revealed himself to Paul on the way to Damascus and he was soon preaching the gospel in that city. Therefore Paul's revelations must have been received about the time of his conversion, and most probably during his sojourn in Arabia. As to exactly when they were received Paul himself is silent; but as to the manner, he declares that he received them from Jesus, so his gospel was from the same source as that of the other apostles. The rest of the chapter is taken up in proving the statements of these two verses.]