What does Revelation 19:18 mean?

The purpose of gathering the birds together is to consume the flesh of kings, captains, and mighty men, as well as the flesh of horses and their riders, and the flesh of all men, both free and slave. Earth's remaining forces of evil are about to experience a gory death at the hands of the King of kings and Lord of lords, as He returns in His glorious second coming (Revelation 19:11–17).

Neither prominent political power, nor wealth, nor military might can save any wicked person from the wrath of God that falls upon him at the hands of the Lord Jesus Christ. What happens to the wicked at Christ's return stands in stark contrast to the one-dimensional view many hold of God's love. They think God is too loving to judge anyone. They are wrong, of course, because the same perfection which produces God's love is that which produces His holiness, righteousness, and justice. He is too holy to tolerate sin, too righteous to enable wickedness to continue, and too just to let sin and sinners go unpunished.

The wicked who marshal themselves against the King when He returns to earth had spurned His love, and now they must feel His anger. In a display of glory and power, the same Jesus who willingly laid down His life (Philippians 2:8; Matthew 26:53) will single-handedly obliterate His enemies from the face of the earth (Isaiah 63:3; Revelation 19:21).