Charles Ellicott Commentary Psalms 78:15

"He clave rocks in the wilderness, And gave them drink abundantly as out of the depths." — Psalms 78:15 (ASV)

And gave ... —Literally, and gave them to drink as if it were a great deep, or as we might say, “oceans of drink”—a poetical exaggeration; or are we rather to think of the gift of water as produced by striking or boring through the rock to the great ocean on which the earth was supposed to rest?