Marah: 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 Desert of Shur. For three days they walked in the desert without finding water. …

They set out from Pi-hahiroth and crossed through the sea, into the wilderness, and they journeyed three days into the Wilderness of Etham and camped at Marah.

They set out from Marah and came to Elim, where there were twelve springs and seventy palm trees, and they camped there.