Exodus 15:24-26

New Century Version

²⁴ The people grumbled to Moses and asked, “What will we drink?”

²⁵ So Moses cried out to the Lord, and the Lord showed him a tree. When Moses threw the tree into the water, the water became good to drink.

There the Lord gave the people a rule and a law to live by, and there he tested their loyalty to him. ²⁶ He said, “You must obey the Lord your God and do what he says is right. If you obey all his commands and keep his rules, I will not bring on you any of the sicknesses I brought on the Egyptians. I am the Lord who heals you.”