Deuteronomy 28:52-53

521It shall besiege you in all your 2towns until your high and fortified walls in which you trusted come down throughout your land, and it shall besiege you in all your 3towns throughout your land which the Lord your God has given you.

534Then you shall eat the 5offspring of your own body, the flesh of your sons and of your daughters whom the Lord your God has given you, during the siege and the distress by which your enemy will 6oppress you.