Isaiah showing Hezekiah the shadow on the Dial

A black chalk drawing showing a scene from the Second Book of Kings, Chapter XX, verses 8-11, of the Old Testament. Isaiah, in the centre, points to the sundial on the far left, telling the King Hezekiah, in bed on the right, that he would recover from his illness. The three figures surrounding the King's bed all show their surprise, with one of them holding his arms aloft.