Revelation 8:2-6

And I saw the seven angels who stand before God, and seven trumpets were given to them.

Another angel came and stood at the altar, holding a golden censer; and much incense was given to him, so that he might add it to the prayers of all the saints on the golden altar which was before the throne.

And the smoke of the incense ascended from the angel’s hand with the prayers of the saints before God.

Then the angel took the censer and filled it with the fire of the altar, and hurled it to the earth; and there were peals of thunder and sounds, and flashes of lightning and an earthquake.

And the seven angels who had the seven trumpets prepared themselves to sound them.