Revelation 9:14-15, 20

The voice said to the sixth angel who had the trumpet, “Free the four angels who are tied at the great river Euphrates.” And they let loose the four angels who had been kept ready for this hour and day and month and year so they could kill a third of all people on the earth.

The other people who were not killed by these terrible disasters still did not change their hearts and turn away from what they had made with their own hands. They did not stop worshiping demons and idols made of gold, silver, bronze, stone, and wood—things that cannot see or hear or walk.