The explanation of the heads, the beasts, and the horns:
Related Commentaries of Revelation 17:9
Revelation 17:9-14
9 And here is the mind which hath wisdom. The seven heads are seven mountains, on which the woman sitteth.
10 And there are seven kings: five are fallen, and one is, and the other is not yet come; and when he cometh, he must continue a short space.
11 And the beast that was, and is not, even he is the eighth, and is of the seven, and goeth into perdition.
12 And the ten horns which thou sawest are ten kings, which have received no kingdom as yet; but receive power as kings one hour with the beast.
13 These have one mind, and shall give their power and strength unto the beast.
14 These shall make war with the Lamb, and the Lamb shall overcome them: for he is Lord of lords, and King of kings: and they that are with him are called, and chosen, and faithful.