Matthew 24:10
And then many people will fall away [from God] and they will turn one another over [i.e., to the authorities for punishment], and they will hate one another.
Acts 23:7-10
When he said this it stirred up a dispute between the Pharisees and Sadducees and the assembly became divided.
Galatians 5:15
But if you [unlovingly] bite and eat one another [i.e., figuratively], be careful that you do not totally consume one another.
James 3:14
But if you people have bitter jealousy and rivalry in your hearts, do not be arrogant [over it] and deny the truth.
James 3:16
For when jealousy and rivalry exist, there is [also] disorder and every [kind of] evil practice.
James 4:1-3
Where do conflicts and fights among you come from? Do they not come from your [desire for] pleasures which produces inner conflict?