Thematic Bible: The first station of the israelites, where moses made the bitter waters sweet

Then Moses led Israel from the Red Sea, and they went out into the wilderness of Shur; and they went three days in the wilderness and found no water. When they came to Marah, they could not drink the waters of Marah, for they were bitter; therefore it was named Marah. So the people grumbled at Moses, saying, "What shall we drink?" read more.
Then 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.

They journeyed from before Hahiroth and passed through the midst of the sea into the wilderness; and they went three days' journey in the wilderness of Etham and camped at Marah. They journeyed from Marah and came to Elim; and in Elim there were twelve springs of water and seventy palm trees, and they camped there.