All they that take the sword shall perish with the sword. Matthew 26:52 (KJV) This also is referenced by the author of Revelation 13:10: He that killeth with the sword must be killed with the sword. Here is the patience and the faith of the saints. Proverbial variants (unsourced translations): He who lives by the sword shall die by the sword. They who live by the sword shall die by the sword.