The word of the Lord comes to Ezekiel with a question: how does the wood of the vine compare with the wood of any other tree in the forest? Is wood taken from it to make anything useful? Do people make a peg of it to hang any vessel on? No. The vine is given to the fire for fuel, and if the fire has consumed both ends and the middle is charred, is it good for anything? Even when it was whole it was used for nothing; how much less when the fire has consumed it and it is charred.
The Lord applies the image: like the wood of the vine among the trees of the forest, which he has given to the fire for fuel, so he will give up the inhabitants of Jerusalem. He will set his face against them; though they have come out of the fire, the fire will yet consume them. And they will know that he is the Lord when he sets his face against them.
The chapter concludes with the reason: God will make the land desolate because they have acted faithlessly, that is, they have been unfaithful to the Lord. The parable is brief and deliberately uncomfortable, because it removes from Jerusalem every ground for pride.