David
Psalm 78:16ESV·traditional attribution

He made streams come out of the rock and caused waters to flow down like rivers.

John Calvin Reformed @genevareformer

PSALM 78 To comprehend many things within small compass, it is to be observed, that in this psalm there are two leading topics. On the one hand, it is declared how God adopted for himself a Church from the posterity of Abraham, how tenderly and graciously he cherished it, how wonderfully he brought it out of Egypt, and how varied were the blessings which he bestowed upon it.

Commenting on Psalm 78:1-72

C.H. Spurgeon Reformed Baptist @princeofpreachers

The supply of water was as plenteous in quantity as it was miraculous in origin. Torrents, not driblets came from the rocks. Streams followed the camp; the supply was not for an hour or a day. This was a marvel of goodness. If we contemplate the abounding of divine grace we shall be lost in admiration. Mighty rivers of love have flowed for us in the wilderness. Alas, great God!

Matthew Henry Presbyterian @wholebiblehenry

In these verses, I. The psalmist observes the late rebukes of Providence that the people of Israel had been under, which they had brought upon themselves by their dealing treacherously with God, Psa 78:9-11. The children of Ephraim, in which tribe Shiloh was, though they were well armed and shot with bows, yet turned back in the day of battle.

Commenting on Psalm 78:9-39