In the Book of Revelation, seven trumpets are sounded, one at a time, to cue apocalyptic events seen by John of Patmos (Revelation 1:9) in his vision (Revelation 1:1). The seven trumpets are sounded by seven angels and the events that follow are described in detail in Revelation 8–11. However, there are also many other messages, events and signs that occur before and after the trumpets that are described in the Book of Revelation, as this is only one section. According to Revelation 8:1–2 the angels sound these trumpets after the breaking of the seventh seal. These seals secured the apocalyptic document held in the right hand of Him who sits on the throne. The trumpets are referred to in Koine Greek as σάλπιγξ (sálpinx, salpinx); this was a straight, narrow bronze tube with a mouthpiece of bone and a bell; they do not closely resemble modern valve trumpets. The final three trumpets are sometimes called the "woe trumpets".

After the Exodus, God had Moses make two silver trumpets, (Numbers 10:2), later called the chazozra. The traditional sacred horn of the ancient Hebrews was the shofar, made from a ram's horn.

Upon the sound of the first trumpet, hail and fire mingled with blood is thrown to Earth, burning up a third of the trees on the planet, and all green grass. 1/3 of nature will disappear.

With the sounding of the second trumpet, something described as "a great mountain burning with fire" plunges into the sea and turns a third of the oceans to blood. Soon after, a third of all sea life and a third of all ships will be destroyed.

With the sounding of the third trumpet, a great star called Wormwood falls to the Earth, poisoning a third of the planet's freshwater sources, such as rivers and springs. Many will die from the bitterness of its taste.

Following the sounding of the fourth trumpet, a third of the light that shines from the Sun, moon, and stars becomes dark from the celestial bodies being "struck." This catastrophe causes complete darkness for a third of the day, even through night hours. This is the final trumpet that sounds before the three woes, also known as the fifth, sixth, and seventh trumpets.

The fifth trumpet is the "first woe" of three. Before this trumpet sounds, an angel (translated as an eagle in some versions) appears, and warns, "Woe, woe, woe, to those who dwell on the earth, because of the remaining blasts of the trumpet of the three angels who are about to sound!"

The fifth trumpet prompts a personified star to fall from heaven. The star is given the key to the bottomless pit. After opening it, the smoke that rises out of the pit darkens the air and blocks the sunlight. Then, from out of the smoke, the locusts are unleashed. The locusts are scorpion-tailed warhorses that have a man's face with lion's teeth. Their hair is long and they fly with locust-like wings. They are adorned with golden crowns and protected with iron breastplates. They are commanded by their king, Abaddon, to torment anyone who does not have the seal of God on their forehead, by using their scorpion-like tails. It is also made clear to them that they must not kill anyone during the five months of torment.