Matthew 24:10
and then many will be offended; and they will betray one another, and hate one another.
Acts 23:7-10
And he speaking this, there was a dissension of the Pharisees and Sadducees: and the multitude was divided.
Galatians 5:15
But if you bite and devour one another, take heed that you may not be consumed one of another.
James 3:14
But if you have bitter envy and strife in your heart, do not boast, and lie against the truth.
James 3:16
For where there are envy and strife, there are contention and every evil work.
James 4:1-3
Whence come wars and whence come battles within you? are they not from thence, from your pleasures warring in your members?