Adam Clarke on Ezekiel 15:2

What is the vine tree more than any tree - It is certain that the vine is esteemed only on account of its fruit. In some countries, it is true, it grows to a considerable size and thickness: but, even then, it is not of a sufficient density to work into furniture. But whatever may be said of the stock of the vine, it is the branch that the prophet speaks of here; and I scarcely know the branch of any tree in the forest more useless than is the branch of the vine. Out of it who can even make a pin to drive into a mud wall, or hang any vessel on? A vine would never be cultivated for the sake of its wood; it is really worthless but as it bears fruit. What is Israel? Good for nothing, but as God influenced them to bring forth fruit to his glory. But now that they have ceased to be fruitful, they are good for nothing, but, like a withered branch of the vine, to be burnt.