Matthew 24:10
And then many will fall away, and will betray one another, and hate one another.
Acts 23:7-10
When he said this, a dissension broke out between the Pharisees and the Sadducees, and the assembly was divided.
Galatians 5:15
But if you bite and devour one another, take care that you are not consumed by one another.
James 3:14
But if you have bitter jealousy and selfish ambition in your hearts, do not boast and be false to the truth.
James 3:16
For where jealousy and selfish ambition exist, there will be disorder and every evil practice.
James 4:1-3
What causes quarrels and fights among you? Is it not your passions that are at war in your members?