Rev 8:12, 9:17-18, 14:18 | ISV | STEP | When the fourth angel blew his trumpet, one-third of the sun, one-third of the moon, and one-third of the stars were struck so that one-third of them turned dark. One-third of the day was kept from shining, and also the night.

Revelation of John 8:12

12 When the fourth angel blew his trumpet, one-third of the sun, one-third of the moon, and one-third of the stars were struck so that one-third of them turned dark. One-third of the day was kept from shining, and also the night.Isa 13:10; Amos 8:9

Revelation of John 9:17-18

17 This was how I saw the horses in my vision: The riders wore breastplates that had the color of fire, sapphire, and sulfur. The heads of the horses were like lions’ heads, and fire, smoke, and sulfur came out of their mouths.1Chr 12:8; Isa 5:28-29 18 By these three plagues—the fire, the smoke, and the sulfur that came out of their mouths—one-third of humanity was killed.

Revelation of John 14:18

18 From the altar came another angel who had authority over fire. He called out in a loud voice to the angel ^{▼▼Lit. to the one} who had the sharp sickle, “Swing your sharp sickle, and gather the bunches of grapes from the vine of the earth, because those grapes are ripe.”Joel 3:13; Rev 16:8