From the beginning of his career Martin Luther thought intensively about questions concerning the human being’s capacities for loving God and the neighbor. The relation between human nature and love was a vital issue throughout his whole theological work even though he explicitly connected it with the concept of ‘imago Dei’ only quite late. Luther discusses human nature mostly in its fallen state, where the image is almost totally lost, but presents also his view of human nature in its pure (...) state. He avoids identifying the Divine love and the image of God. Nevertheless, love clearly belongs to the image. The article aims at investigating the reason for this view and the question of ontological difference between Christ as the essential image of God and the ‘ordinary’ human being as having the image of God. Luther’s understanding of the role of love in the relation between the human being and God will be compared with that of his Catholic contemporary, Cardinal Cajetan. The article intends,furthermore, to describe how Luther understands the restoration of the image of God through the outward means of the Gospel and Sacraments and the inner but given affects of faith and love. (shrink)