These both.—Both of these systems, not the people.
Were cast alive.—While they are still organized and operative.—H. 59.
Into a lake of fire burning with brimstone.—Into the complete and everlasting destruction, of the anarchy (symbolized by fire) of the Time of Trouble. This utter destruction of these systems is the beginning of the annihilation of everything out of harmony with God's righteous arrangements. It was typified by the valley of Gehenna, just outside of Jerusalem. By the aid of brimstone the bodies of specially detestable criminals were there burned with the other refuse of Jerusalem. Standing upon the edge of this valley at night it had the appearance of a lake burning with fire and brimstone. Burning brimstone is the most deadly agent known, and symbolizes utter destructiveness.—Dan. 7:11.
19:21. And the remnant.—The people who are left after their systems are destroyed.
Were slain with the sword of Him that sat upon the horse.—Will, in due time, come into loving and cheerful submission to the truth.—Rev. 19:15; 2 Cor. 10:4.
Which sword proceeded out of His mouth.—All should be able to see that it is not a literal sword that is here referred to.
And all the fowls were filled with their flesh.—See Rev. 19:18.