Exodus 15:20-27 New International Version (NIV)

20 Then Miriam the prophet, Aaron’s sister, took a timbrel in her hand, and all the women followed her, with timbrels and dancing. 21 Miriam sang to them:

“Sing to the Lord,
for he is highly exalted.
Both horse and driver
he has hurled into the sea.”

22 Then Moses led Israel from the Red Sea and they went into the Desertof Shur. For three days they traveled in the desert without finding water.23 When they came to Marah, they could not drink its water because it was bitter. (That is why the place is called Marah. 24 So the people grumbled against Moses, saying, “What are we to drink?”

25 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. 26 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 keepall 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.”

27 Then they came to Elim, where there were twelve springs and seventy palm trees, and they camped there near the water.