Galatians 2:1-3 New Revised Standard Version (NRSV)
Paul and the Other Apostles
2 Then after fourteen years I went up again to Jerusalem with Barnabas, taking Titus along with me. 2 I went up in response to a revelation. Then I laid before them (though only in a private meeting with the acknowledged leaders) the gospel that I proclaim among the Gentiles, in order to make sure that I was not running, or had not run, in vain. 3 But even Titus, who was with me, was not compelled to be circumcised, though he was a Greek.