Ex 3:7 – And the Lord said, I have surely seen the affliction of my people which are in Egypt, and have heard their cry by reason of their taskmasters; for I know their sorrows ; 3:8 – And I came down to deliver them out of the hand of the Egyptians, and to bring them up out of that land unto a good land and a large one, unto a land flowing with milk and honey; unto the place of the Canaanites and the Hittites, and the Amorites, and the Perizzites, and the Hivites, and the Jebusites.

Sickness is affliction and oppression, God, has come to deliver you from it.