Angels show their love for God through their service of other creatures, just as we are enjoined to show our love for God by serving one another. Angels make God's goodness concrete, both in this life and in the life to come.
Our meditation should begin with the realization of our NOTHINGNESS AND HELPLESSNESS in the presence of God... "Finding our heart" and recovering this awareness of our inmost identity implies the recognition that our external, everyday self is to a great extent a mask and a fabrication. It is not our true self. And, indeed, our true self is not easy to find. IT IS HIDDEN IN OBSCURITY AND "NOTHINGNESS" at the center where we are in direct dependence on God.