Revelation 2:16

Repent, therefore; if not, I will come to you quickly, and I will fight against them with the sword of my mouth.

Revelation 12:3-2

And there appeared another sign in heaven; and behold, a great dragon, fiery-red, that had seven heads, and ten horns: and on his heads seven diadems.

Revelation 13:4

And they worshiped the dragon, because he gave authority to the beast: and they worshiped the beast, saying, Who is like the beast? and, Who is able to make war with him?

Revelation 13:11

And I saw another beast coming up out of the earth; and he had two horns like a lamb, and he spoke as a dragon.

Revelation 16:13

And I saw three unclean spirits, like frogs, come out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet.

Revelation 17:1

And there came one of the seven angels that had the seven cups, and talked with me, saying: Come, I will show you the judgment of the great harlot that sits on many waters,

Revelation 17:15

And he said to me: The waters which you saw, where the harlot sits, are peoples and multitudes and nations and tongues.

Revelation 19:21

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

Revelation 20:2

And he laid hold of the dragon, that old serpent, which 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, therefore; if not, I will come to you quickly, and I will fight against them with the sword of my mouth.
Revelation 19:21
And the rest were slain with the sword of him that sat on the horse, which sword proceeded out of his mouth: and all the birds were filled with their flesh.

In the sea

Revelation 13:1
{ And I stood on the sand of the sea, and saw a beast coming up out of the sea, and he had seven heads and ten horns, and on his horns ten diadems, and on his heads names impiously irreverent.}
Revelation 17:1
And there came one of the seven angels that had the seven cups, and talked with me, saying: Come, I will show you the judgment of the great harlot that sits on many waters,

General references

Mark 3:27
No one can enter the house of the strong man, and spoil his goods, unless he first bind the strong man; and then he will plunder his house.
Luke 11:22
but when one stronger than he comes upon him and overcomes him, he takes away all his armor in which he trusted, and divides his spoils.