Rev 9:15, 16:12 | ESV | STEP | So the four angels , who had been prepared for the hour , the day , the month , and the year , were released to kill a third of mankind .

Revelation of John 9:15

15 So the four angels, who had been prepared for the hour, the day, the month, and the year, were released ^ato kill a third of mankind.

Revelation of John 16:12

12 The sixth angel poured out his bowl on ^bthe great river Euphrates, and ^cits water was dried up, ^dto prepare the way for the kings ^efrom the east.