Exodus 15:23-25
Read this passage and open each verse for the full verse feed and commentary tools.
23When they came to Marah, they could not drink the waters of Marah, because they were bitter; for that reason it was named Marah. 24So the people grumbled at Moses, saying, “What are we to drink?” 25Then he cried out to the Lord, and the Lord showed him a tree; and he threw it into the waters, and the waters became sweet.
There He made for them a statute and regulation, and there He tested them.