Deuteronomy 9:9

9:9 When I went up the mountain to receive the stone tablets, the tablets of the covenant that the Lord made with you, I remained there forty days and nights, eating and drinking nothing.

Deuteronomy 28:55

28:55 He will withhold from all of them his children’s flesh that he is eating (since there is nothing else left), because of the severity of the siege by which your enemy will constrict you in your villages.