Jesus answered by quoting Deuteronomy: “It takes more than bread to stay alive. It takes a steady stream of words from God’s mouth.”
He simply used God's Word.
When I feel life isn't fair - which often it is not - and take up my words in revenge.
Just a fact.
Just The Truth.
When we are at our weakest - He is "our" strongest.
Again, all that Jesus used to fight back was God's Word.
The one who is in complete control.
The one who sent a personal love letter to each one of us called The Bible.