(17) The valley of Gerar.—The word nahal, rendered “valley,” means a narrow defile through which a summer torrent flows. In the bed of these streams water can generally be found by digging, and Isaac hoped that he was far enough from the city for the enmity to cease. But he was mistaken, though he seems for a short period to have been left in peace.

26:12-17 God blessed Isaac. Be it observed, for the encouragement of poor tenants who occupy other people's lands, and are honest and industrious, that God blessed him with a great increase. The Philistines envied Isaac. It is an instance of the vanity of the world; for the more men have of it, the more they are envied, and exposed to censure and injury. Also of the corruption of nature; for that is an ill principle indeed, which makes men grieve at the good of others. They made Isaac go out of their country. That wisdom which is from above, will teach us to give up our right, and to draw back from contentions. If we are wrongfully driven from one place, the Lord will make room for us in another.Isaac retires, and sets about the digging of wells. He retreats from Gerar and its suburbs, and takes up his abode in the valley, or wady of Gerar. These wadys are the hollows in which brooks flow, and therefore the well-watered and fertile parts of the country. He digs again the old wells, and calls them by the old names. He commences the digging of new ones. For the first the herdmen of Gerar strive, claiming the water as their property. Isaac yields. He digs another; they strive, and he again yields. He now removes apparently into a distinct region, and digs a third well, for which there is no contest. This he calls Rehoboth, "room" - a name which appears to be preserved in Wady er-Ruhaibeh, near which is Wady esh-Shutein, corresponding to Sitnah. "For now the Lord hath made room for us." Isaac's homely realizing faith in a present and presiding Lord here comes out.17. valley of Gerar—torrent-bed or wady, a vast undulating plain, unoccupied and affording good pasture. No text from Poole on this verse.

And Isaac departed thence,.... At once, peaceably and quietly, though to his loss and disadvantage, without taking himself either to argument or arms, in favour of himself; he departed immediately, as soon as he perceived his abode was disagreeable to the king and his people; which gives us a very agree, able idea of the calm and peaceable disposition of Isaac:

and pitched his tent in the valley of Gerar, and dwelt there; at some distance from the city of Gerar, as Jarchi observes. Josephus (g) says it was not far from it; but how far is not certain; very probably it was not out of the country, though on the borders of it. Some render it, "the brook of Gerar" (h), and interpret it, that he pitched his tent, and dwelt by it; and the word used does signify a brook as well as a valley; and there was a brook of Gerar, which Sozomen (i) makes mention of.

(g) Antiqu. l. 1. c. 18. sect. 2.((h) "ad torrentem Gerarae", V. L. (i) Eccl. Hist. l. 6. c. 32.

And Isaac departed thence, and pitched his tent in the {k} valley of Gerar, and dwelt there.

(k) The Hebrew word signifies a flood, or valley, where water at any time runs.