The Book of Judgement is sealed with seven seals. As each seal is broken, mysterious and terrifying events occur, culminating in the breaking of the sixth seal:

and, lo, there was a great earthquake' and the sun became black as sackcloth of hair, and the moon became as blood;

Martin follows the biblical description closely, but adds his own sensational effects. A blood-red glow casts an eerie light over the scene. The mountains are transformed into rolling waves of solid rock, crushing any buildings that lie in their wake. Lightning splits the giant boulders which crash towards the dark abyss, and groups of helpless figures tumble inexorably towards oblivion.

The three pictures in the triptych became famous in the years after Martin's death and were toured throughout England and America. They were described as 'The most sublime and extraordinary pictures in the world valued at 8000 guineas' (quoted in Wilson, p.76). Many mezzotints of the pictures were sold, but the vastness and theatricality of Martin's visions now appeared outmoded to the mid-Victorians, and the paintings themselves failed to find a buyer. By the twentieth century, Martin's work had fallen into obscurity and he became known as 'Mad Martin'. In 1935 the triptych was sold for seven pounds and the separate panels dispersed. It was reunited by the Tate in 1974.