Matthew 24:10
And then will many be caused to stumble, and will deliver up one another, and hate one another;
Acts 23:7-10
And, when he said this, there arose a dissension of the Pharisees and Sadducees; and the multitude was divided.
Galatians 5:15
But, if ye bite and devour one another, beware, lest ye be consumed by one another.
James 3:14
But, if ye have bitter jealousy and contention in your heart, do not boast and lie against the truth.
James 3:16
For where there are jealousy and contention, there is confusion and every vile deed.
James 4:1-3
Whence are wars, and whence are battles among you? Are they not hence, even of your pleasures that war in your members?