Psalms 78:15

Overview - Psalms 78
1	An exhortation both to learn and to preach, the law of God.
9	The story of God's wrath against the incredulous and disobedient.
67	The Israelites being rejected, God chose Judah, Zion, and David.

Psalms 78:15  (King James Version)
He clave the rocks in the wilderness, and gave them drink as out of the great depths.