Revelation 2:16

Repent, at once; or else I will come to you quickly, and will make war upon them with the sword which is in My mouth.

Revelation 12:3-2

And another marvel was seen in Heaven--a great fiery-red Dragon, with seven heads and ten horns; and on his heads were seven kingly crowns.

Revelation 13:4

And they offered worship to the Dragon, because it was to him that the Wild Beast owed his dominion; and they also offered worship to the Wild Beast, and said, "Who is there like him? And who is able to engage in battle with him?"

Revelation 13:11

Then I saw another Wild Beast, coming up out of the earth. He had two horns like those of a lamb, but he spoke like a dragon.

Revelation 16:13

Then I saw three foul spirits, resembling frogs, issue from the mouth of the Dragon, from the mouth of the Wild Beast, and from the mouth of the false Prophet.

Revelation 17:1

Then one of the seven angels who were carrying the seven bowls came and spoke to me. "Come with me," he said, "and I will show you the doom of the great Harlot who sits upon many waters.

Revelation 17:15

He also said to me, "The waters which you have seen, on which the Harlot sits, are peoples and multitudes, nations and languages.

Revelation 19:21

But the rest were killed with the sword that came from the mouth of the Rider on the horse. And the birds all fed ravenously upon their flesh.

Revelation 20:2

He laid hold of the Dragon--the ancient serpent--who is the Devil and the Adversary, and bound him for a thousand years, and hurled him into the bottomless pit.

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, at once; or else I will come to you quickly, and will make war upon them with the sword which is in My mouth.
Revelation 19:21
But the rest were killed with the sword that came from the mouth of the Rider on the horse. And the birds all fed ravenously upon their flesh.

In the sea

Revelation 13:1
And he took up a position upon the sands of the sea-shore. Then I saw a Wild Beast coming up out of the sea, and he had ten horns and seven heads. On his horns were ten kingly crowns, and inscribed on his heads were names full of blasphemy.
Revelation 17:1
Then one of the seven angels who were carrying the seven bowls came and spoke to me. "Come with me," he said, "and I will show you the doom of the great Harlot who sits upon many waters.

General references

Mark 3:27
Nay, no one can go into a strong man's house and carry off his property, unless he first binds the strong man, and then he will plunder his house.
Luke 11:22
but as soon as another stronger than he attacks him and overcomes him, he takes away that complete armour of his in which he trusted, and distributes the plunder he has collected.