Numbers 33:8

They set out from Pi-Hahiroth and went through the midst of the sea into the desert; and they went a journey of three days into the desert of Etham and camped at Marah.

Exodus 14:21-31

And Moses stretched out his hand over the sea, and Yahweh moved the sea with a strong east wind all night, and he made the sea [become] dry ground, and the waters were divided.

Exodus 15:22-26

And Moses caused Israel to set out from the {Red Sea}, and they went out into the desert of Shur, and they traveled three days in the desert, and they did not find water.

Treasury of Scripture Knowledge

Summary

And they departed from before Pihahiroth, and passed through the midst of the sea into the wilderness, and went three days' journey in the wilderness of Etham, and pitched in Marah.

Bible References

Departed

Exodus 14:21
And Moses stretched out his hand over the sea, and Yahweh moved the sea with a strong east wind all night, and he made the sea [become] dry ground, and the waters were divided.
Exodus 15:22
And Moses caused Israel to set out from the {Red Sea}, and they went out into the desert of Shur, and they traveled three days in the desert, and they did not find water.