Revelation 17:9
"This calls for an understanding mind. The seven heads are seven hills on which the woman sits. They are [also] seven kings;
Revelation 13:18
This calls for wisdom; the person who has understanding should calculate the number of the beast, for it is the number of a person. And his number is six hundred and sixty-six.
Revelation 17:3
Then, under the power of the Holy Spirit, the angel transported me to a desert, and [there] I saw a woman sitting on a red beast. It was covered with names that cursed God and it had seven heads and ten horns.
Matthew 13:11
He replied, "You disciples are being given an understanding of the secrets of the kingdom of heaven, but the crowds of people are not.
Matthew 24:15
"Therefore, when you see that disgusting thing which causes total destruction [i.e., the Roman armies. See Luke 21:20], which Daniel the prophet spoke about [Dan. 9:27; 11:31; 12:11], standing in the sacred place [i.e., Jerusalem and especially the Temple area], (let the reader understand [what is meant by this]),
Revelation 13:1
And I saw a beast coming up out of the ocean. It had ten horns and seven heads, and [it had] ten crowns on his horns and on each head there was a blasphemous name [i.e., a name that slandered God].
Revelation 17:7
Then the angel [See verse 1] said to me, "Why are you so amazed? I will explain to you the secret [meaning] of the woman and the beast with seven heads and ten horns that she is riding on.
Revelation 17:18
And the woman you saw is the great city that rules over the kings of the earth."