You may ask hunger and thirst for what? Good question, for the righteousness of God. Well that is feat that none of us can achieve even on our best day and moment, for none of us our righteous. That is why the bible points out that the righteousness of God is obtain by Faith and Trust in Jesus Christ not by any good deeds in and of ourselves. You may have heard of the scripture that stakes the righteous shall live by faith, well that is exactly how it is obtain.