Numbers 33:7-8

MLV(i) 7 And they journeyed from Etham and turned back to Pi-hahiroth, which is before Baal-zephon and they encamped before Migdol.
8 And 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 encamped in Marah.