Exodus 15:23–25

23 When they came to bMarah, they could not drink the water of Marah because it was bitter; therefore it was named Marah.2 24 And the people cgrumbled against Moses, saying, “What shall we drink?” 25 And he dcried to the Lord, and the Lord showed him a log,3 and he ethrew it into the water, and the water became sweet.

There the Lord4 made for them a statute and a rule, and there he ftested them,