In eastern countries where fuel is scarce the want is supplied by dried cow-dung laid up for the winter. Barley cakes were (and are) baked under hot ashes without an oven. The dung here is to be burned to ashes, and the ashes so employed.

Thou shalt bake it with dung - Dried ox and cow dung is a common fuel in the east; and with this, for want of wood and coals, they are obliged to prepare their food. Indeed, dried excrement of every kind is gathered. Here, the prophet is to prepare his bread with dry human excrement. And when we know that this did not come in contact with the bread, and was only used to warm the plate, (see Ezekiel 4:3), on which the bread was laid over the fire, it removes all the horror and much of the disgust. This was required to show the extreme degree of wretchedness to which they should be exposed; for, not being able to leave the city to collect the dried excrements of beasts, the inhabitants during the siege would be obliged, literally, to use dried human ordure for fuel. The very circumstances show that this was the plain fact of the case. However, we find that the prophet was relieved from using this kind of fuel, for cow's dung was substituted at his request. See Ezekiel 4:15.

And thou shalt eat it as barley cakes,.... That is, the bread made of wheat, barley, beans, lentiles, millet, and fitches, was to be made in the form of barley cakes, and to be baked as they; not in an oven, but under ashes; and these ashes not of wood, or straw, or turf, but as follows:

and thou shalt bake it with dung that cometh out of men, in their sight: the prophet was to take human dung, and dry it, and then cover the cakes or loaves of his mixed bread with it, and burn it over them, and with it bake it; which must be a very disagreeable task to him, and make the food very nauseous, both to himself and to the Jews, in whose sight it was done; and this shows scarcity of fuel, and the severity of the famine; that they had not fuel to bake with, or could not stay till it was baked in an oven, and therefore took this method; as well as points at what they were to eat when carried captive, as follows:

And thou shalt eat it as barley cakes, and thou shalt bake it with dung that cometh out of man, in their sight.

4:12 As barley cakes - Because they never had enough to make a loaf with, they eat them as barley cakes. With dung - There was no wood left, nor yet dung of other creatures. This also was represented in a vision.

12. dung-as fuel; so the Arabs use beasts' dung, wood fuel being scarce. But to use human dung so implies the most cruel necessity. It was in violation of the law (De 14:3; 23:12-14); it must therefore have been done only in vision.

4:9-17 The bread which was Ezekiel's support, was to be made of coarse grain and pulse mixed together, seldom used except in times of urgent scarcity, and of this he was only to take a small quantity. Thus was figured the extremity to which the Jews were to be reduced during the siege and captivity. Ezekiel does not plead, Lord, from my youth I have been brought up delicately, and never used to any thing like this; but that he had been brought up conscientiously, and never had eaten any thing forbidden by the law. It will be comfortable when we are brought to suffer hardships, if our hearts can witness that we have always been careful to keep even from the appearance of evil. See what woful work sin makes, and acknowledge the righteousness of God herein. Their plenty having been abused to luxury and excess, they were justly punished by famine. When men serve not God with cheerfulness in the abundance of all things, God will make them serve their enemies in the want of all things.