Seven trumpets
Seven trumpets are sounded, one at a time, to cue apocalyptic events that were seen in the vision of the Revelation of Jesus, by Jonh, as written in the Book of Revelation of the New Testament. The seven trumpets are sounded by seven angels and the events that follow are described in detail from Revelation Chapters 8 to 11. According to Revelation 8:1-2, the angels sound these trumpets after the breaking of the seventh seal. These seals secured the apocalyptic document, that was in the right hand of God.[1][2]
Seven Trumpets Media
Cloisters Apocalypse (circa 1330), an angel sounds the 2nd trumpet and fire rains on the sea. The trumpet is an añafil, adopted from the Muslim nafir by Christians after the two sides fought in the Reconquista and crusades.
Angels blowing trumpets at the end of the world was not limited to Christian theology. Islamic artwork features the Archangel Israfel blowing the nafir trumpet at the end the world. From the Mameluke Dynasty