By fire and by his sword (see the introductory paragraph). The "sword of Jehovah" is spoken of also in Isaiah 27:1 and Isaiah 34:5, Isaiah 34:6 (comp. Revelation 19:15, Revelation 19:21). Will the Lord plead with all flesh; rather, will the Lord judge all flesh (comp.
Jeremiah 25:31, where the same phrase occurs).