Depart from me, all ye workers of iniquity; for the LORD hath heard the voice of my weeping. Depart from me, all ye workers of iniquity - It seems that while he was suffering grievously through the disease, his enemies had insulted and mocked him; - upbraided him with his transgressions, not to increase his penitence, but to cast him into despair.
The Lord hath heard the voice of my weeping - The Lord pitifully beheld the sorrows of his heart, and mercifully forgave his sins.