Isaiah 38:21

For Isaiah had said, Let them take a lump of figs, and lay it for a plaister upon the boil, and he shall recover.

Lump of figs - a round cake of figs pressed into a mass (). God works by means, the meanest of which He can make effectual.

Boil - the inflamed ulcer or carbuncle. Meade thinks Hezekiah's sickness was a fever terminating in an abscess.