Exodus 23:25

23:25 You must serve the Lord your God, and he will bless your bread and your water, and I will remove sickness from your midst.

Exodus 15:26

15:26 He said, “If you will diligently obey the Lord your God, and do what is right in his sight, and pay attention to his commandments, and keep all his statutes, then all the diseases that I brought on the Egyptians I will not bring on you, for I, the Lord, am your healer.”