"I sees de doom crack en hears de golden horns shoutin down de glory"
Detail from Judgement Day fresco
Public DomainDetail from Judgement Day fresco - Credit: Viktor Vasnetsov
Detail from Judgement Day fresco
Public DomainDetail from Judgement Day fresco - Credit: Viktor Vasnetsov

This refers to the incidents described in the Book of Revelation. The Lamb of God opens the scroll with the seven seals which summons up seven angels. Each is given a trumpet which, when sounded, rains calamity upon the sinners of earth. This apocalypse heralds the Day of Judgement on which the righteous will be saved.

 

Detail from the Altarpiece of the Last Judgement
Public DomainDetail from the Altarpiece of the Last Judgement - Credit: Rogier van der Weyden