Matthew 24:10
And then many will fall away, and will betray one another, and hate one another.
Acts 23:7-10
As soon as he said this, a dispute arose between the Pharisees and the Sadducees; and there was a sharp division of opinion among those present.
Galatians 5:15
But, if you are continually wounding and preying upon one another, take care that you are not destroyed by one another.
James 3:14
But, while you harbor envy and bitterness and a spirit of rivalry in your hearts, do not boast or lie to the detriment of the Truth.
James 3:16
For, where envy and rivalry exist, there you will also find disorder and all kinds of base actions.
James 4:1-3
What is the cause of the fighting and quarreling that goes on among you? Is not it to be found in the desires which are always at war within you?