Revelation 2:16

Repent; if not, I will very soon come to you and make war upon them with the sword of my mouth.

Revelation 12:3-2

Then another portent was seen in heaven! There was a huge red dragon, with seven heads and seven horns and seven diadems upon his heads;

Revelation 13:4

worshipping the dragon for having given authority to the Beast, and worshipping the Beast with the cry, "Who is like the Beast? Who can fight with him?"

Revelation 13:11

Then I saw another Beast rising from the land; he had two horns like a lamb, but he spoke like a dragon.

Revelation 16:13

Then I saw issuing from the mouth of the dragon and from the mouth of the Beast and from the mouth of the false Prophet, three foul spirits like frogs ??14 demon-spirits performing miracles, who come out to muster the kings of the whole world for battle on the great Day of almighty God.

Revelation 17:1

Then came one of the seven angels with the seven plagues and spoke to me, saying, "Come and I will show you the doom of the great Harlot who is seated on many waters,

Revelation 17:15

He also told me, "The waters you saw, on which the woman is seated, are peoples and hosts, nations and tongues.

Revelation 19:21

while the rest were killed by the sword of him who is seated on the horse, by the sword that issues from his lips. And all the birds were glutted with their flesh.

Revelation 20:2

he gripped the dragon, that old serpent (who is the devil and Satan), and bound him for a thousand years,

Treasury of Scripture Knowledge

Summary

In that day the LORD with his sore and great and strong sword shall punish leviathan the piercing serpent, even leviathan that crooked serpent; and he shall slay the dragon that is in the sea.

General references

Bible References

With his

Revelation 2:16
Repent; if not, I will very soon come to you and make war upon them with the sword of my mouth.
Revelation 19:21
while the rest were killed by the sword of him who is seated on the horse, by the sword that issues from his lips. And all the birds were glutted with their flesh.

In the sea

Revelation 13:1
Then I stood on the sand of the sea, and I saw a Beast rising out of the sea with ten horns and seven heads, ten diadems on his horns, and blasphemous titles on his heads.
Revelation 17:1
Then came one of the seven angels with the seven plagues and spoke to me, saying, "Come and I will show you the doom of the great Harlot who is seated on many waters,

General references

Mark 3:27
No one can enter the strong man's house and plunder his goods unless first of all he binds the strong man; then he can plunder his house.
Luke 11:22
but when a stronger man attacks and conquers him, he seizes the panoply on which he relied and divides up the spoil.