So the people grumbled against Moses, saying, “What are we to drink?”
It should seem, it was with some difficulty that Moses prevailed with Israel to leave that triumphant shore on which they sang the foregoing song. They were so taken up with the sight, or with the song, or with the spoiling of the dead bodies, that they cared not to go forward, but Moses with much ado brought them from the Red Sea into a wilderness.
Commenting on Exodus 15:22-27
And he cried unto the Lord,.... Or prayed, as all the Targums, that God would appear for them, and relieve them in their distress, or, humanly speaking, they must all perish: happy it is to have a God to go to in time of trouble, whose hand is not shortened that it cannot save, nor his ear heavy that he cannot hear!
The people murmured - They were in a state of great mental degradation, owing to their long and oppressive vassalage, and had no firmness of character. See Clarke's note on Exo 13:17.