Revelation 9:14-15, 20

And the voice said to the sixth angel who held the trumpet, “Release the four angels who are bound at the great Euphrates River.” Then the four angels who had been prepared for this hour and day and month and year were turned loose to kill one-third of all the people on earth.

But the people who did not die in these plagues still refused to repent of their evil deeds and turn to God. They continued to worship demons and idols made of gold, silver, bronze, stone, and wood—idols that can neither see nor hear nor walk!