Revelation 17:10, 12, 16-17
Revelation 17:10 NKJV
There are also seven kings. Five have fallen, one is, and the other has not yet come. And when he comes, he must continue a short time.
Revelation 17:12 NKJV
“The ten horns which you saw are ten kings who have received no kingdom as yet, but they receive authority for one hour as kings with the beast.