8 Bible Verses about Division Among Christians

Some men came down from Judea to teach the brothers. They said: You cannot be saved unless you become circumcised according to the custom of Moses. Paul and Barnabas had an intense (harsh) dispute and debate with them. They concluded that Paul, Barnabas, and others should go up to Jerusalem to the apostles and elders to settle this question. The congregation sent them on their way. They passed through Phoenicia and Samaria, declaring the conversion of the nations. They brought great joy to all the brothers.read more.
Then they went to Jerusalem where the apostles and elders and congregation greeted them. They declared all the things that God had done for them. The believers who belonged to the party of the Pharisees stated: It is needed to circumcise them and to command them to keep the Law of Moses.

Now I beseech you, brothers, mark those who cause divisions and offenses contrary to the doctrine you have learned and avoid them.

I appeal to you, brothers, in the name of our Lord Jesus Christ, that you all speak the same thing and that there are no divisions among you. You should be perfectly joined together (united) in the same mind and thought. The house of Chloe told me, my brothers, that there are disputes among you. Concerning that I say, that each one of you said, I follow Paul; and I follow Apollos; and I follow Cephas; and I follow Christ.read more.
Is Christ divided? Was Paul impaled for you? Or were you baptized in the name of Paul?

You are still fleshly! There is envy, strife, and divisions among you. Do you not walk as ordinary men?

If you have a dispute with another [Christian] do you dare to go to a law court before judges who are ungodly? Why not let the holy ones decide who is right?

For first of all, when you come together in the congregation, I hear that there are divisions among you and I partly believe it.

Beware of the dogs (impure men) (false teachers)! Beware of the evil workers! Beware of the mutilation of the body.

They went out from us, but they were not of us. If they had belonged to us, they would have continued with us. But they went out that it made it plain that they all are not of us.