Galatians 1:6-8 YLT

6 I wonder that ye are so quickly removed from Him who did call you in the grace of Christ to another good news;
7 that is not another, except there be certain who are troubling you, and wishing to pervert the good news of the Christ;
8 but even if we or a messenger out of heaven may proclaim good news to you different from what we did proclaim to you -- anathema let him be!