8 Bible Verses about Division Among Christians

Some men came down from Judea and began to teach the brothers: “Unless you are circumcised according to the custom prescribed by Moses, you cannot be saved!” But after Paul and Barnabas had engaged them in serious argument and debate, the church arranged for Paul and Barnabas and some others of them to go up to the apostles and elders in Jerusalem concerning this controversy. When they had been sent on their way by the church, they passed through both Phoenicia and Samaria, explaining in detail the conversion of the Gentiles, and they created great joy among all the brothers. read more.
When they arrived at Jerusalem, they were welcomed by the church, the apostles, and the elders, and they reported all that God had done with them. But some of the believers from the party of the Pharisees stood up and said, “It is necessary to circumcise them and to command them to keep the law of Moses!”

Now I urge you, brothers, to watch out for those who cause dissensions and obstacles contrary to the doctrine you have learned. Avoid them,

Now I urge you, brothers, in the name of our Lord Jesus Christ, that all of you agree in what you say, that there be no divisions among you, and that you be united with the same understanding and the same conviction. For it has been reported to me about you, my brothers, by members of Chloe’s household, that there is rivalry among you. What I am saying is this: Each of you says, “I’m with Paul,” or “I’m with Apollos,” or “I’m with Cephas,” or “I’m with Christ.” read more.
Is Christ divided? Was it Paul who was crucified for you? Or were you baptized in Paul’s name?

because you are still fleshly. For since there is envy and strife among you, are you not fleshly and living like unbelievers?

If any of you has a legal dispute against another, do you dare go to court before the unrighteous, and not before the saints?

For to begin with, I hear that when you come together as a church there are divisions among you, and in part I believe it.

Watch out for “dogs,” watch out for evil workers, watch out for those who mutilate the flesh.

They went out from us, but they did not belong to us; for if they had belonged to us, they would have remained with us. However, they went out so that it might be made clear that none of them belongs to us.