Galatians 1:6-12 New Revised Standard Version (NRSV)
There Is No Other Gospel
6 I am astonished that you are so quickly deserting the one who called you in the grace of Christ and are turning to a different gospel— 7 not that there is another gospel, but there are some who are confusing you and want to pervert the gospel of Christ. 8 But even if we or an angel[a] from heaven should proclaim to you a gospel contrary to what we proclaimed to you, let that one be accursed! 9 As we have said before, so now I repeat, if anyone proclaims to you a gospel contrary to what you received, let that one be accursed!
10 Am I now seeking human approval, or God’s approval? Or am I trying to please people? If I were still pleasing people, I would not be a servant[b] of Christ.
Paul’s Vindication of His Apostleship
11 For I want you to know, brothers and sisters,[c] that the gospel that was proclaimed by me is not of human origin; 12 for I did not receive it from a human source, nor was I taught it, but I received it through a revelation of Jesus Christ.