Many people think that bread and physical food in general is all that is needed to live. It is true that physical food is necessary to survive and satisfy our physical hunger, but according to Jesus Christ, there is something else that is needed to make our lives more than just survival. What is it? The answer comes in the same verse:

Matthew 4: 4
"It is written:" Man does not live by bread alone, but by every word that comes from the mouth of God. "