Every word matters

De 8:3 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.v

Mt 4:4 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.

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