Galatians 6:13

6:13 For those who are circumcised do not obey the law themselves, but they want you to be circumcised so that they can boast about your flesh.

Galatians 2:3

2:3 Yet not even Titus, who was with me, was compelled to be circumcised, although he was a Greek.

Galatians 5:2-3

5:2 Listen! I, Paul, tell you that if you let yourselves be circumcised, Christ will be of no benefit to you at all! 5:3 And I testify again to every man who lets himself be circumcised that he is obligated to obey the whole law.

Galatians 6:12

6:12 Those who want to make a good showing in external matters are trying to force you to be circumcised. They do so only to avoid being persecuted for the cross of Christ.