Deuteronomy 28:52-53

52And he shall besiege thee in all thy gates, until thy high and fortified walls come down, in which thou didst trust, throughout all thy land: and he shall besiege thee in all thy gates throughout all thy land, which the LORD thy God hath given thee. 53And thou shalt eat the fruit of thy own body, the flesh of thy sons and of thy daughters, which the LORD thy God hath given thee, in the siege, and in the distress, by which thy enemies shall distress thee:1