9 Here is a problem for a profound mind! The seven heads are seven hills, on which the woman is seated.
Revelation 17:9 Cross References - Goodspeed
Matthew 13:11
11 He answered, "You are permitted to know the secrets of the Kingdom of Heaven, but they are not.
Matthew 24:15
15 "So when you see the dreadful desecration, of which the prophet Daniel spoke, set up in the Holy Place"—the reader must take note of this—
Revelation 13:1
1 Then I stood on the sand of the seashore, and I saw an animal come up out of the sea with ten horns and seven heads, and with ten diadems on its horns, and blasphemous titles on its heads.
Revelation 13:18
18 There is wisdom hidden here! Let everyone of intelligence calculate the animal's number, for it indicates a certain man; its number is 666.
Revelation 17:3
3 So he carried me away in a trance to a desert, and I saw a woman seated on a scarlet animal all covered with blasphemous titles; it had seven heads and ten horns.
Revelation 17:7
7 but the angel said to me, "Why are you amazed? I will explain to you what the woman and the animal with seven heads and ten horns that carries her symbolize.
Revelation 17:18
18 And the woman that you saw is the great city that has dominion over the kings of the earth."