But even if we or an angel from heaven should preach to you a gospel other than the one that we preached to you, let that one be accursed! As we have said before, and now I say again, if anyone preaches to you a gospel other than the one that you received, let that one be accursed!

Am I now currying favor with human beings or God? Or am I seeking to please people? If I were still trying to please people, I would not be a slave of Christ.

Now I want you to know, brothers and sisters, that the Gospel preached by me is not of human origin. For I did not receive it from a human being, nor was I taught it, but it came through a revelation of Jesus Christ. –Epistle of Paul to the Galatians