Numbers 33:6-8

6 They left Succoth and camped at Etham, on the edge of the desert.

7 They left Etham, turned back to Pi Hahiroth, to the east of Baal Zephon, and camped near Migdol.

8 They left Pi Hahiroth and passed through the sea into the desert, and when they had traveled for three days in the Desert of Etham, they camped at Marah.