I. How this similitude is expressed here. The wild vine, that is among the trees of the forest, or the empty vine (which Israel is compared to, Hos. x. 1), that bears no more fruit than a forest-tree, is good for nothing; it is as useless as a brier, and more so, for that will add some sharpness to the thorny hedge, which the vine-branch will not do. He shows, 1. That it is fit for no use. The wood of it is not taken to do any work; one cannot so much as make a pin of it to hand a vessel upon, v. 3. See how variously the gifts of nature are dispensed for the service of man. Among the plants, the roots of some, the seeds or fruits of others, the leaves of others, and of some the stalks, are most serviceable to us; so, among trees, some are strong and not fruitful, as the oaks and cedars; others are weak but very fruitful, as the vine, which is unsightly, low, and depending, yet of great use. Rachel is comely but barren, Leah homely but fruitful. 2. That therefore it is made use of for fuel; it will serve to heat the oven with. Because it is not meet for any work, it is cast into the fire, v. 4. When it is good for nothing else it is useful this way, and answers a very needful intention, for fuel is a thing we must have, and to burn any thing for fuel which is good for other work is bad husbandry. To what purpose is this waste? The unfruitful vine is disposed of in the same way with the briers and thorns, which are rejected, and whose end is to be burnt, Heb. vi. 8. And what care is taken of it then? If a piece of solid timber be kindled, somebody perhaps may snatch it as a brand out of the burning, and say, "It is a pity to burn it, for it may be put to some better use;" but if the branch of a vine be on fire, and, as usual, both the ends of it and the middle be kindled together, nobody goes about to save it. When it was whole it was meet for no work, much less when the fire has devoured it (v. 5); even the ashes of it are not worth saving.