Thematic Bible: Who is not the servant of Christ

I marvel that you are so quickly deserting him who called you in the grace of Christ to a different "good news"; and there isn't another "good news." Only there are some who trouble you, and want to pervert the Good News of Christ. But even though we, or an angel from heaven, should preach to you any "good news" other than that which we preached to you, let him be cursed. read more.
As we have said before, so I now say again: if any man preaches to you any "good news" other than that which you received, let him be cursed. For am I now seeking the favor of men, or of God? Or am I striving to please men? For if I were still pleasing men, I wouldn't be a servant of Christ.