Mark 3:24

And if a kingdom be divided against itself, that kingdom cannot stand.

Matthew 10:34

Think not that I am come to send peace on earth: I came not to send peace, but a sword.

Revelation 6:4

And there went out another horse that was red: and power was given to him that sat thereon to take peace from the earth, and that they should kill one another: and there was given unto him a great sword.

Jeremiah 12:12

The spoilers are come upon all high places through the wilderness: for the sword of the Lord shall devour from the one end of the land even to the other end of the land: no flesh shall have peace.