Exodus 15:26

He said to him, “I am the LORD your God. If you listen to me and do what I say is right, and if you obey all my commands and laws, then I will not give you any of the sicknesses that I gave the Egyptians. I am the your God. If you listen to me and do what I say is right, and if you obey all my commands and laws, then I will not give you any of the sicknesses that I gave the Egyptians. I am the LORD who heals you.”