Exodus 15:24-26

Amplified Bible

²⁴ The people [grew discontented and] grumbled at Moses, saying, “What are we going to drink?” ²⁵ Then he cried to the Lord [for help], and the Lord showed him a tree, [a branch of] which he threw into the waters, and the waters became sweet.

There the Lord made a statute and an ordinance for them, and there ^[a]He tested them, ²⁶ saying, “If you will diligently listen and pay attention to the voice of the Lord your God, and do what is right in His sight, and listen to His commandments, and keep [foremost in your thoughts and actively obey] all His precepts and statutes, then I will not put on you any of the diseases which I have put on the Egyptians; for I am the ^[b]Lord who heals you.”