Revelation 2:16

Repent, therefore, or else I am coming to you quickly, and will make war with them with the sword of My mouth.

Revelation 12:3-2

And another sign was seen in the heaven; and, behold, a great red dragon, having seven heads and ten horns, and upon his heads seven diadems.

Revelation 13:4

And they worshiped the dragon, because he gave his 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 was speaking as a dragon.

Revelation 16:13

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

Revelation 17:1

And there came one of the seven angels who had the seven bowls, and spake with me, saying, "Come hither! I will show you the judgment of the great harlot, that sits on many waters;

Revelation 17:15

And he says 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 killed with the sword of Him Who was sitting on the horse, the sword that went forth out of His mouth; and all the birds were filled with their flesh.

Revelation 20:2

And he seized the dragon, the 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, or else I am coming to you quickly, and will make war with them with the sword of My mouth.
Revelation 19:21
And the rest were killed with the sword of Him Who was sitting on the horse, the sword that went forth out of His mouth; and all the birds were filled with their flesh.

In the sea

Revelation 13:1
(12:18) and he stood upon the sand of the sea. (13:1) And I saw a beast coming up out of the sea, having ten horns and seven heads, and on his horns ten diadems, and upon his heads names of blasphemy.
Revelation 17:1
And there came one of the seven angels who had the seven bowls, and spake with me, saying, "Come hither! I will show you the judgment of the great harlot, that sits on many waters;

General references

Mark 3:27
But no one is able, after having entered into the house of the strong man, to plunder his goods, except he first bind the strong man; and then will he plunder his house.
Luke 11:22
but, when a stronger than he, coming upon him, overcomes him, he takes away his whole armor upon which he had relied, and distributes his spoils.