Galatians 1:7; Galatians 1:9; Galatians 2:6; Galatians 2:12; Galatians 5:6; Galatians 6:1; Galatians 6:3; Galatians 6:15

7 which is really not another; only there are some who are disturbing you and want to distort the gospel of Christ.
9 As we have said before, so I say again now, if any man is preaching to you a gospel contrary to what you received, he is to be accursed!
6 But from those who were of high reputation (what they were makes no difference to me; God shows no partiality )-well, those who were of reputation contributed nothing to me.
12 For prior to the coming of certain men from James, he used to eat with the Gentiles; but when they came, he began to withdraw and hold himself aloof, fearing the party of the circumcision.
6 For in Christ Jesus neither circumcision nor uncircumcision means anything, but faith working through love.
1 Brethren, even if anyone is caught in any trespass, you who are spiritual, restore such a one in a spirit of gentleness; each one looking to yourself, so that you too will not be tempted.
3 For if anyone thinks he is something when he is nothing, he deceives himself.
15 For neither is circumcision anything, nor uncircumcision, but a new creation.