Deuteronomy 8:2-4

LXX2012(i) 2 And you shall remember all the way which the Lord your God led you in the wilderness, that he might afflict you, and try you, and that the things in your heart might be made manifest, whether you would keep his commandments or no. 3 And he afflicted you and straitened you with hunger, and fed you with manna, which your fathers knew not; that he might teach you that man shall not live by bread alone, but by every word that proceeds out of the mouth of God shall man live. 4 Your garments grew not old from off you, your shoes were not worn from off you, your feet were not [painfully] hardened, behold! these forty years.