Deuteronomy 28:52-53

52And he shall besiege thee in all thy gates, until thy high and fenced walls come down, wherein thou trustedst, 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 thine 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 straitness, wherewith thine enemies shall straiten thee.