O LORD my God, I cried unto thee, and thou hast healed me.
O Lord. The invocation of 'Yahweh' in the opening of each of the three first verses marks their close mutual relation.
Thou hast healed me - thou hast removed my spiritual malady (my pride, which brought on me chastisement), and the consequent plague which so reduced my people. Compare Psalms 30:10-11; 1 Chronicles 21:14-27; Isaiah 1:5-6; Isaiah 6:10; 2 Chronicles 36:16, margin.