Matthew 26:52
Then saith Jesus unto him, Return thy sword into its sheath: for all who take the sword, shall perish by the sword.
Revelation 13:10
If any person leads [others] into captivity, he shall be led into captivity; if any person kills with the sword, he must be slain by the sword. Here is the patience and the faith of the saints.
James 3:9
With it we bless God even the Farther; and with the same we curse men, though after the likeness of God.
Romans 13:4
for he is the minister of God to thee for good. But if thou doest that which is evil, tremble! for he beareth not the sword in vain: for he is the minister of God, an avenger to inflict wrath on him that practises what is evil.