Galatians 1:18-24 ESV
Then after three years I went up to Jerusalem to visit Cephas and remained with him fifteen days. But I saw none of the other apostles except James the Lord’s brother. (In what I am writing to you, before God, I do not lie!) Then I went into the regions of Syria and Cilicia. And I was still unknown in person to the churches of Judea that are in Christ. They only were hearing it said, “He who used to persecute us is now preaching the faith he once tried to destroy.” And they glorified God because of me.
ESV: English Standard Version 2016