8 Bible Verses about Division Among Christians

AND certain persons coming down from Judea taught the brethren, That if ye are not circumcised according to the ordinances of Moses, ye cannot be saved. There being therefore no small contention and dispute maintained by Paul and Barnabas against them, they determined that Paul and Barnabas, and certain others of their body, should go up to the apostles and presbyters at Jerusalem, for the decision of this question. They therefore being sent on their way by the church, passed through Phoenicia and Samaria, giving a particular narrative of the conversion of the Gentiles: and they gave great joy to all the brethren.read more.
Then when they arrived at Jerusalem, they were cordially received by the church, and the apostles and presbyters, and they related how great things God had done by them. But up rose some of the pharisaical sect, who professed the faith, insisting, That it was necessary to circumcise them, and to enjoin them to observe the law of Moses.

Now I beseech you, brethren, keep a sharp eye over those who cause divisions and offences contrary to the doctrine ye have learned, and turn away from them.

Now I conjure you, brethren, by the name of our Lord Jesus Christ, that ye all speak the same thing, and that there be no schisms among you; but that ye be perfectly united together in the same mind and the same sentiment. For I have been informed concerning you, my brethren, by those of the family of Chloe, that there are contentions among you. Now this I observe, that one and another of you saith, I am indeed of Paul; but I of Apollos; but I of Cephas; but I am of Christ.read more.
Is Christ divided? was Paul crucified for you? or were ye baptised into the name of Paul?

For ye are still carnal: for since there are among you envy, and strife, and divisions, are ye not carnal, and walk as [other] men?

DARE any of you, having a matter of controversy with another, sue for judgment before the unjust, and not before the saints?

For in the first place, when ye assemble in the church, I hear that there are divisions among you; and I partly believe it.

Beware of dogs, beware of the malicious labourers, beware of the concision.

They went out from us, but they were not of us; for if they had been of us, they would have continued with us; but they departed, that they might be made manifest that they are not all of us: