Exodus 15:22

19 For the horses of Pharaoh, with his war-carriages and his horsemen, went into the sea, and the Lord sent the waters of the sea back over them; but the children of Israel went through the sea on dry land.

20 And Miriam, the woman prophet, the sister of Aaron, took an instrument of music in her hand; and all the women went after her with music and dances.

21 And Miriam, answering, said, Make a song to the Lord, for he is lifted up in glory; the horse and the horseman he has sent into the sea.

22 Then Moses took Israel forward from the Red Sea, and they went out into the waste land of Shur; and for three days they were in the waste land where there was no water.

23 And when they came to Marah, the water was no good for drinking, for the waters of Marah were bitter, which is why it was named Marah.

24 And the people, crying out against Moses, said, What are we to have for drink?

25 And in answer to his prayer, the Lord made him see a tree, and when he put it into the water, the water was made sweet. There he gave them a law and an order, testing them;