Isaiah 33:24 - Ellicott's Commentary On The Whole Bible

The inhabitant shall not say, I am sick... — The words seem to have had their starting- point in the pestilence which attacked the Assyrian army, and which had probably been felt, during the siege, in Jerusalem itself. The prophet, seeing in such a pestilence the punishment of iniquity, couples together the two blessings of health and pardon. Healthy, because holy, was his report as to the restored Jerusalem. (Comp. Matthew 9:2.)