Galatians 1:16-20

to reveal his Son in me, that I might preach him among the heathen; immediately I conferred not with flesh and blood: neither went I up to Jerusalem to them which were apostles before me; but I went into Arabia, and returned again unto Damascus. Then after three years I went up to Jerusalem to see Peter, and abode with him fifteen days. But other of the apostles saw I none, save James the Lord's brother. Now the things which I write unto you, behold, before God, I lie not.