Your passions drive your actions. When your actions revolve around yourself, (your own comfort; your own desires; your own strengths) your passions are focused inward and your joy is dependent on fulfilling those passions. When you are passionate about Jesus Christ your joy is not based on yourself but on the realization that Jesus is passionate about you. Your actions are based on Your mutual love for each other. Jesus is passionate about you and he wants you to be passionate about him. That’s why he said if you love me, if you’re passionate about me, If your desire is for me, then you will naturally to have the things that I have promised you.