Biblical Sources of Phrases in Common Use: Man Shall Not Live by Bread Alone

In two places in the Bible, Jesus is recorded as saying that "Man shall not live by bread alone ..."  We have more than merely physical needs.  Jesus said it, but he was quoting from the scriptures.

"But he answered and said, It is written, Man shall not live by bread alone, but by every word that proceedeth out of the mouth of God." Matthew 4:4

"And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God." Luke 4:4

"And he humbled thee, and suffered thee to hunger, and fed thee with manna, which thou knewest not, neither did thy fathers know; that he might make thee know that man doth not live by bread only, but by every word that proceedeth out of the mouth of the Lord doth man live." Deuteronomy 8:2-3