Galatians 2:1-3

Then after the space of fourteen years I went up again to Jerusalem with Barnabas, taking Titus also with me. And I went up by revelation; and I laid before them the gospel which I preach among the Gentiles but privately before them who were of repute, lest by any means I should be running, or had run, in vain. But not even Titus who was with me, being a Greek, was compelled to be circumcised