‘Therefore thus says the Lord Yahweh, “Woe to the blood-filled city. I will also make the pile great. Heap on the wood, make the fire hot, boil well the flesh, and make the broth thick and let the bones be burned. Then set it empty on its coals, that it may be red hot and its copper burn, and that its filthiness may be molten in it, that its rust may be consumed.”
This cauldron, the blood-filled city, with its contents is doomed. God Himself will make of it a great burnt up pile. So the command comes to heap on wood, blow on the fire to make it burning hot, and then to overcook the flesh and the broth until it is spoiled and to burn the bones. Then once the spoiled flesh and broth are removed the cauldron is to remain on the fire as it grows hotter and hotter, until the copper is red hot, the filth within it becomes molten, and its rust is consumed. It is a picture of total destruction.