Exodus 15:22-26 Now Moses caused Israel to journey from the Sea of Weeds. So they went forth to the wilderness of Shur, and went three days into the wilderness, but they found no waters.

CLV⁽ⁱ⁾ ²² Now Moses caused Israel to journey from the Sea of Weeds. So they went forth to the wilderness of Shur, and went three days into the wilderness, but they found no waters. ²³ When they came to Marah, they were unable to drink the waters of Marah, for they were bitter; therefore one called its name Marah. ²⁴ Then the people grumbled against Moses, saying: What shall we drink? ²⁵ So he cried out to Yahweh, and Yahweh directed him to a tree. So he flung it into the waters, and the waters were sweet. There He made for them a statute and a judgment, and there He probed them, ²⁶ for He said: If you shall hearken, yea hearken to the voice of Yahweh your Elohim and do what is upright in His eyes, and give ear to His instructions and observe all His statutes, then all the illnesses which I placed on the Egyptians I shall not place on you, for I am Yahweh your Healer.