Thematic Bible: Who is not the servant of Christ

I am astonished that you are turning away so quickly from the one who called you by the grace of Christ to a different gospel, not that [there] is a different [gospel], except there are some who are disturbing you and wanting to distort the gospel of Christ. But even if we or an angel from heaven should proclaim a gospel to you contrary to what we proclaimed to you, let him be accursed! read more.
As we said before, and now I say again, if anyone is proclaiming a gospel [to] you contrary to what you have received, let him be accursed! For am I now making an appeal to people or [to] God? Or am I seeking to please people? If I were still trying to please people, I would not be a slave of Christ.