Did not all the workers and consumers of the nation know that they ate bread? Coarse bread and fine bread. Rabbi Samuel interpreted the verse concerning the nations of the world (Jeremiah 2:3). When they found tattered clothing in the chamber of the perpetual lamp and slaughtered and ate them, they found bread arranged on the table and ate it. And what is "And the Lord did not call them"? (Jeremiah 2:3) "Israel is holy to the Lord, the first of His harvest." Those who do not eat from the money of Israel are as if they did not taste bread, but whoever eats from their possessions tastes bread....
When Israel Forgot the Meaning of Their Own Bread
Midrash Tehillim 14:5