Galatians 1:17-18; Galatians 2:1

17 nor did I go up to Jerusalem to those who were apostles before me; but I went away to Arabia, and returned once more to Damascus. 18 Then three years later I went up to Jerusalem to become acquainted with Cephas, and stayed with him fifteen days.
1 Then after an interval of fourteen years I went up again to Jerusalem with Barnabas, taking Titus along also.