Revelation 16:12

16:12 Then the sixth angel poured out his bowl on the great river Euphrates and dried up its water to prepare the way for the kings from the east.

Revelation 17:2

17:2 with whom the kings of the earth committed sexual immorality and the earth’s inhabitants got drunk with the wine of her immorality.”

Revelation 17:9

17:9 (This requires a mind that has wisdom.) The seven heads are seven mountains the woman sits on. They are also seven kings: