Exodus 15:25–26

And he cried to the Lord, and the Lord showed him a log, and he threw it into the water, and the water became sweet.

There the Lord made for them a statute and a rule, and there he tested them, saying, “If you will diligently listen to the voice of the Lord your God, and do that which is right in his eyes, and give ear to his commandments and keep all his statutes, I will put none of the diseases on you that I put on the Egyptians, for I am the Lord, your healer.”

Then Moses cried out to the Lord, and the Lord showed him a piece of wood. He threw it into the water, and the water became fit to drink.

There the Lord issued a ruling and instruction for them and put them to the test. He said, “If you listen carefully to the Lord your God and do what is right in his eyes, if you pay attention to his commands and keep all his decrees, I will not bring on you any of the diseases I brought on the Egyptians, for I am the Lord, who heals you.”

So he cried out to the Lord, and the Lord showed him a tree. When he threw it into the water, the water became drinkable.

The Lord made a statute and ordinance for them at Marah, and he tested them there. He said, “If you will carefully obey the Lord your God, do what is right in his sight, pay attention to his commands, and keep all his statutes, I will not inflict any illnesses on you that I inflicted on the Egyptians. For I am the Lord who heals you.”

So Moses cried out to the Lord for help, and the Lord showed him a piece of wood. Moses threw it into the water, and this made the water good to drink.

It was there at Marah that the Lord set before them the following decree as a standard to test their faithfulness to him. He said, “If you will listen carefully to the voice of the Lord your God and do what is right in his sight, obeying his commands and keeping all his decrees, then I will not make you suffer any of the diseases I sent on the Egyptians; for I am the Lord who heals you.”

And he cried out to Yahweh, and Yahweh showed him a piece of wood, and he threw it into the water, and the water became sweet. There he made a rule and regulation for them, and there he tested them. And he said, “If you carefully listen to the voice of Yahweh your God and you do what is right in his eyes and give heed to his commands and you keep all his rules, then I will not bring about on you any of the diseases that I brought about on Egypt, because I am Yahweh your healer.

And he cried unto the Lord; and the Lord shewed him a tree, which when he had cast into the waters, the waters were made sweet: there he made for them a statute and an ordinance, and there he proved them, And said, If thou wilt diligently hearken to the voice of the Lord thy God, and wilt do that which is right in his sight, and wilt give ear to his commandments, and keep all his statutes, I will put none of these diseases upon thee, which I have brought upon the Egyptians: for I am the Lord that healeth thee.