Galatians 1:14-18

and I advanced in the Jews’ religion beyond many of mine own age among my countrymen, being more exceedingly zealous for the traditions of my fathers. But when it was the good pleasure of God, who separated me, even from my mother’s womb, and called me through his grace, to reveal his Son in me, that I might preach him among the Gentiles; straightway I conferred not with flesh and blood: neither went I up to Jerusalem to them that were apostles before me: but I went away into Arabia; and again I returned unto Damascus. Then after three years I went up to Jerusalem to visit Cephas, and tarried with him fifteen days.