Galatians 1:6-9

I marvel that ye are so quickly removing from him that called you in the grace of Christ unto a different gospel; which is not another gospel: only there are some that trouble you, and would pervert the gospel of Christ. But though we, or an angel from heaven, should preach unto you any gospel other than that which we preached unto you, let him be anathema. As we have said before, so say I now again, If any man preacheth unto you any gospel other than that which ye received, let him be anathema.