1. 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.
  1. And Jesus answered him, saying, It is written, That man shall not live by bread alone, but by every word of God.

Jesus quoted from Deuteronomy:

  1. 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.

The very point that God said in Deuteronomy is just as Israel was fed daily and continuously by manna from God, so are we be fed continuously by the word of God.

Jesus defeated Satan’s temptations by other verses, which were also from Deuteronomy. See Deuteronomy 6:13, 6:16

We should know God's word thoroughly and personally, and not merely