Ezekiel 4:13
And the LORD said, Even thus shall the children of Israel eat their defiled bread among the Gentiles, whither I will drive them. And the LORD said, Even thus shall the children of Israel eat their defiled bread among the Gentiles, whither I will drive them.
In history the verse belongs to the time when Ezekiel served as God's mouthpiece among the Israelite captives in Babylonia while Jeremiah prophesied in Jerusalem. In Ezekiel 4 it belongs to the acted miniature of Jerusalem's siege and its consequences, in which Ezekiel typified the awful judgments to come. That typifying was done by symbolic acts including lying days on his left side and then days on his right side and eating bread by weight and drinking water by measure. His privations in that prophetic sign point to Israel's coming suffering.
It foretells that the children of Israel would eat their defiled bread among the nations and Gentiles to which God would drive them, as part of their captivity and exile. His famine diet represents the hardship that would come upon them, that famine would overtake the people and they would be taken captive by their enemies. Eating that defiled bread in exile expresses the contempt and humiliation they suffered in captivity.