Moses
Genesis 26:18ESV·traditional attribution

And Isaac dug again the wells of water that had been dug in the days of Abraham his father, which the Philistines had stopped after the death of Abraham. And he gave them the names that his father had given them.

John Calvin Reformed @genevareformer

18. And Isaac digged again the wells of water. First, we see that the holy man was so hated by his neighbors, as to be under the necessity of seeking a retreat for himself which was destitute of water; and no habitation is so troublesome and inconvenient for the ordinary purposes of life as that which suffers from scarcity of water.

Matthew Henry Presbyterian @wholebiblehenry

Here we have, I. The tokens of God's good-will to Isaac. He blessed him, and prospered him, and made all that he had to thrive under his hands. 1. His corn multiplied strangely, Gen 26:12. He had no land of his own, but took land of the Philistines, and sowed it; and (be it observed for the encouragement of poor tenants, that occupy other people's...

Commenting on Genesis 26:12-25

John Gill Reformed Baptist @doctorgill

And Isaac's servants digged in the valley,.... In the valley of Gerar, as the Septuagint version expresses it: and found there a well of springing water; or "living water" (l), which continually flows, as Aben Ezra rightly interprets it: hence this phrase is used of the perpetual and ever living graces of the Spirit of God, Joh 4:10. (l) "aquarum viventium", Pagninus, Montanus, Drusius.