Deuteronomy 28:53-55

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.

54The man that is tender among you, and very delicate, his eye shall be evil toward his brother, and toward the wife of his bosom, and toward the remnant of his children which he hath remaining:

55so that he will not give to any of them of the flesh of his children whom he shall eat, because he hath nothing left him; in the siege and in the straitness, wherewith thine enemy shall straiten thee in all thy gates.