Revelation 19:21

The rest were killed by the sword which came out of the mouth of him who rode upon the horse; and all the birds fed upon their flesh.

Revelation 1:16

in his right hand he held seven stars, from his mouth came a sharp two-edged sword, and his face was like 'the sun in the fulness of its power.'

Revelation 17:16

The ten horns that you saw, and the Beast--they will hate the Harlot, and cause her to become deserted and strip her bare; they will eat her very flesh and utterly consume her with fire.

Revelation 19:11-15

Then I saw that Heaven lay open. There appears a white horse; its rider is called 'Faithful' and 'True'; righteously does he judge and make war.

Revelation 19:17-19

Then I saw an angel standing on the sun. He cried in a loud voice to all the birds that fly in mid-heaven-- 'Gather and come to the great feast of God,

Treasury of Scripture Knowledge

Summary

And the remnant were slain with the sword of him that sat upon the horse, which sword proceeded out of his mouth: and all the fowls were filled with their flesh.

Bible References

The remnant

Revelation 19:11
Then I saw that Heaven lay open. There appears a white horse; its rider is called 'Faithful' and 'True'; righteously does he judge and make war.
Revelation 1:16
in his right hand he held seven stars, from his mouth came a sharp two-edged sword, and his face was like 'the sun in the fulness of its power.'

And all

Revelation 19:17
Then I saw an angel standing on the sun. He cried in a loud voice to all the birds that fly in mid-heaven-- 'Gather and come to the great feast of God,
Revelation 17:16
The ten horns that you saw, and the Beast--they will hate the Harlot, and cause her to become deserted and strip her bare; they will eat her very flesh and utterly consume her with fire.