Then I saw the seven angels who stand before God, and seven trumpets were given to them.
References for Revelation 8:2
Another angel came and stood at the altar, and he held a gold bowl for burning incense. He was given a large amount of incense, in order to offer it on behalf of the prayers of all the saints on the gold altar in front of the throne.
The smoke of the incense offered for the prayers of the saints rose up before God from the angel's hand.
Then the angel took the incense container and filled it with fire from the altar. He threw it down to the earth, and there were thunder, voices, lightning, and an earthquake.
Then the seven angels who held the seven trumpets got ready to blow them.
The first angel blew his trumpet, and hail and fire mixed with blood appeared, and was thrown down to the earth. A third of the earth was burned up. A third of the trees were burned up. All the green grass was burned up.
Then the second angel blew his trumpet, and something like a huge mountain burning with fire was thrown down into the sea. A third of the sea became blood,
a third of the creatures living in the sea died, and a third of the ships were destroyed.
Then the third angel blew his trumpet, and a great star, burning like a torch, fell from heaven. It fell on a third of the rivers and springs of water.
The star's name is Wormwood, and a third of the waters became wormwood, and many people died from the water, because it became so bitter.
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 became dark. The day lost a third of its light, and the night lost a third of its light too.
Then I looked and I heard an eagle flying high overhead. It said with a loud voice, "Horror, horror, oh! The horror for those who live on earth because of the blasts of the remaining trumpets that the three angels are about to blow!"