Revelation 8:2-6

8:2 Then I saw the seven angels who stand before God, and seven trumpets were given to them. 8:3 Another angel holding a golden censer came and was stationed at the altar. A large amount of incense was given to him to offer up, with the prayers of all the saints, on the golden altar that is before the throne. 8:4 The smoke coming from the incense, along with the prayers of the saints, ascended before God from the angel’s hand. 8:5 Then the angel took the censer, filled it with fire from the altar, and threw it on the earth, and there were crashes of thunder, roaring, flashes of lightning, and an earthquake.

8:6 Now the seven angels holding the seven trumpets prepared to blow them.

Revelation 8:12

8:12 Then the fourth angel blew his trumpet, and a third of the sun was struck, and a third of the moon, and a third of the stars, so that a third of them were darkened. And there was no light for a third of the day and for a third of the night likewise.