Then they came to Elim, where there were twelve springs of water and seventy palm trees, and they encamped there by the water.
27. And they came to Elim. Moses here relates that a more pleasant station was granted to the people, when they were led to a well-watered spot, even planted with palm-trees, which do not usually grow in a dry soil. But we learn from what precedes, that this was a concession to their infirmity, because they had borne their thirst so impatiently. EXODUS 16 Exodus 16:1-8 1.
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
they came to Elim, where were twelve wells of water--supposed to be what is now called Wady-Ghurandel, the most extensive watercourse in the western desert--an oasis, adorned with a great variety of trees, among which the palm is still conspicuous, and fertilized by a copious stream. It is estimated to be a mile in breadth, but stretching out far to the northeast.