10 If anyone comes to you, and doesn't bring this teaching, don't receive him into your house, and don't welcome him,
But even though we, or an angel from heaven, should preach to you any gospel other than that which we preached to you, let him be cursed. As we have said before, so I now say again: if any man preaches to you any gospel other than that which you received, let him be cursed.
Now I beg you, brothers, look out for those who are causing the divisions and occasions of stumbling, contrary to the doctrine which you learned, and turn away from them. For those who are such don't serve our Lord, Jesus Christ, but their own belly; and by their smooth and flattering speech, they deceive the hearts of the innocent.