'Sword' in the Bible

“Do not think that I have come to bring peace on the earth; I have not come to bring peace, but a sword [of division between belief and unbelief].

And one of those who were with Jesus reached out and drew his sword, and struck [Malchus] the slave of the high priest and cut off his ear.

Then Jesus said to him, “Put your sword back in its place; for all those who habitually draw the sword will die by the sword.