Galatians 2:3-5

Living_Oracles(i) 3 However, neither Titus, who was with me, though a Greek, was compelled to be circumcised, 4 even on account of the false brethren secretly introduced; (who came in privily to spy out our liberty, which we have by Jesus Christ, that they might bring us into bondage;) 5 nor did we give place to them by submission, not even for an hour, that the truth of the gospel might remain with you.