Revelation 17:9

Here is the mind that has wisdom: The seven heads are seven mountains, whereon the woman sits.

Revelation 13:18

Here is wisdom. He that has understanding let him count the number of the beast: for it is a man's number; and its number is six hundred and sixty-six.

Revelation 17:3

And he carried me away in spirit to a desert; and I saw a woman sitting upon a scarlet beast, full of names of blasphemy, having seven heads and ten horns.

Daniel 12:4

And thou, Daniel, close the words, and seal the book, till the time of the end. Many shall run to and fro, and knowledge shall be increased.

Daniel 12:8-10

And I heard, but I understood not. And I said, My lord, what shall be the end of these things?

Hosea 14:9

Who is wise, and he shall understand these things? intelligent, and he shall know them? For the ways of Jehovah are right, and the just shall walk in them; but the transgressors shall fall therein.

Matthew 13:11

And he answering said to them, Because to you it is given to know the mysteries of the kingdom of the heavens, but to them it is not given;

Matthew 24:15

When therefore ye shall see the abomination of desolation, which is spoken of through Daniel the prophet, standing in what is a holy place, (he that reads let him understand,)

Revelation 13:1

And I stood upon the sand of the sea; and I saw a beast rising out of the sea, having ten horns and seven heads, and upon its horns ten diadems, and upon its heads names of blasphemy.

Revelation 17:7

And the angel said to me, Why hast thou wondered? I will tell thee the mystery of the woman, and of the beast which carries her, which has the seven heads and the ten horns.

Revelation 17:18

And the woman which thou sawest is the great city, which has kingship over the kings of the earth.

Treasury of Scripture Knowledge

Summary

And here is the mind which hath wisdom. The seven heads are seven mountains, on which the woman sitteth.

Bible References

Here

Revelation 13:18
Here is wisdom. He that has understanding let him count the number of the beast: for it is a man's number; and its number is six hundred and sixty-six.
Daniel 12:4
And thou, Daniel, close the words, and seal the book, till the time of the end. Many shall run to and fro, and knowledge shall be increased.
Hosea 14:9
Who is wise, and he shall understand these things? intelligent, and he shall know them? For the ways of Jehovah are right, and the just shall walk in them; but the transgressors shall fall therein.
Matthew 13:11
And he answering said to them, Because to you it is given to know the mysteries of the kingdom of the heavens, but to them it is not given;
Matthew 24:15
When therefore ye shall see the abomination of desolation, which is spoken of through Daniel the prophet, standing in what is a holy place, (he that reads let him understand,)

The seven

Revelation 17:3
And he carried me away in spirit to a desert; and I saw a woman sitting upon a scarlet beast, full of names of blasphemy, having seven heads and ten horns.
Revelation 13:1
And I stood upon the sand of the sea; and I saw a beast rising out of the sea, having ten horns and seven heads, and upon its horns ten diadems, and upon its heads names of blasphemy.