“They will toss their silver in the streets, and their gold will be as an unclean thing. Their silver and their gold will not be able to deliver them in the day of the wrath of Yahweh. They will not satisfy themselves nor fill their bowels, because it has been the stumblingblock of their iniquity.”
Their wealth will be tossed away and be seen as detestable, ‘unclean' like the menstrual flow of a woman (which was in those days looked on with something akin to disgust and horror by Israelite men). Silver and gold will be useless in the day of the wrath of Yahweh, for there will be nothing to buy. It will not provide the people with food, and satisfy them and fill their bowels, for there will be none. It will have no use. Perhaps there is also the thought that the people will not wish to appear rich, for they know that their captors will especially carry off the wealthy, reputable citizens. Thus wealth will no longer be desirable. Alternately the thought may be that with their silver and gold they had made their idols which will not be able to deliver them in ‘the day of the wrath of Yahweh'.
‘Because it has been the stumblingblock of their iniquity.' And all this will be because it was their silver and gold that helped to lead them astray, either through greed or idolatry. It was that which had caused them to stumble.