Numbers 33:8 (BSB)

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.

From Numbers 33. Also in the ESV.

Commentary on Numbers 33:8

• John Calvin (Reformed), Calvin's Commentaries on Numbers 33:8: 8. And they departed from before Pi-hahiroth. He relates how the people marched forwards for three days; not so much in praise of their endurance, as in celebration of God’s wonderful power, who sustained so great a multitude without water.
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Numbers 33:8: And they departed from before Pihahiroth,.... Being forced by Pharaoh's army pressing upon them: and passed through the midst of the sea; from shore to shore, as on dry laud: into the wilderness: that part of it which lay on the other side, for still it was the wilderness of Etham they went into, as follows: and went three days' journey in the wilderness of...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Numbers 33:8: Marah--thought to be Ain Howarah, both from its position and the time (three days) it would take them with their children and flocks to march from the water of Ayun Musa to that spot.
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Numbers 33:1-15: Num 33:1-15 The first and second verses form the heading: “These are the marches of the children of Israel, which they marched out,” i.e., the marches which they made from one place to another, on going out of Egypt. מסּע does not mean a station, but the breaking up of a camp, and then a train, or march (see at Exo 12:37, and Gen 13:3). לצבאתם (see Exo 7:4).