3 Bible Verses about Disharmony

And Jesus knowing their thoughts said to them, Every kingdom divided against itself comes to desolation, and every city or house divided against itself shall not stand.

And proclaiming this, I do not praise you, because you come together not for the better but for the worse. For in the first place, indeed you coming together, I hear that there are schisms among you; and I in part believe it.

I am astonished that you are so quickly removed from him who called you in the grace of Christ into another gospel; which is not another: but there are certain ones who are troubling you, and wishing to pervert the gospel of Christ. But indeed if we, or an angel from heaven, may preach unto you any other gospel except that which we have preached unto you, let him be accursed.read more.
As we have before said, and now again I tell you, If any one preaches to you a gospel except that which you have received, let him be accursed.