Revelation 8:4-6 World English Bible (WEB)
4 The smoke of the incense, with the prayers of the saints, went up before God out of the angel’s hand. 5 The angel took the censer, and he filled it with the fire of the altar, then threw it on the earth. Thunders, sounds, lightnings, and an earthquake followed.
6 The seven angels who had the seven trumpets prepared themselves to sound.