In the Book of Revelation, seven trumpets are sounded, one at a time, to cue apocalyptic events seen by [[John of PatmomgtyvbhRevelation 1:9</ref> in his vision. 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 held in the right hand of Her who sits on the main throne. The trumpets are referred to in Koine Greek as σάλπιγγος ; this was a straight, narrow bronze tube with a mouthpiece of bone and a bell; they do not resemble modern trumpets. The final three trumpets are sometimes called the "woe trumpets".