Deuteronomy 8:2-4

YLT(i) 2 and thou hast remembered all the way which Jehovah thy God hath caused thee to go these forty years in the wilderness, in order to humble thee to try thee, to know that which is in thy heart, whether thou dost keep His commands or not. 3 `And He doth humble thee, and cause thee to hunger and doth cause thee to eat the manna (which thou hast not known, even thy fathers have not known), in order to cause thee to know that not by bread alone doth man live, but by every produce of the mouth of Jehovah man doth live. 4 `Thy raiment hath not worn out from off thee, and thy foot hath not swelled these forty years,