They won't pour out wine offerings to Yahweh, Neither will they be pleasing to him. Their sacrifices will be to them like the bread of mourners; All who eat of it will be polluted; For their bread will be for their appetite. It will not come into the house of Yahweh.
"Their bread shall be for their appetite ..."  Slave-masters will feed their slaves exactly as they did their animals, merely for the purpose of keeping them alive and in working condition.  No consideration at all would be given to what the Israelites would have considered clean or unclean food.  Given the Jewish attitude regarding what was kosher, their situation in Assyrian exile would be one of great sorrow.