Revelation 16:11-13

Young's Literal Translation

¹¹ and they did speak evil of the God of the heaven, from their pains, and from their sores, and they did not reform from their works.

¹² And the sixth messenger did pour out his vial upon the great river, the Euphrates, and dried up was its water, that the way of the kings who are from the rising of the sun may be made ready;

¹³ and I saw [come] out of the mouth of the dragon, and out of the mouth of the beast, and out of the mouth of the false prophet, three unclean spirits like frogs --