Hans Jonas developed in ‘Past and Truth’ (1991) a demonstration of the existence of God based on the ‘truth of past things’. And in ‘The Concept of God after Auschwitz’ (1984) he created a new myth of divine self-alienation in order to take away God’s responsibility for human misery. Both these texts were conceived as an alternative to a more Hegelian, objective idealist perspective on theology. This article shows that Jonas’s alternative does not fully succeed in this respect because his (...) arguments bring him back to an idealist perspective. His proof of God is revisited and explained using new insights recently developed by Robert Spaemann, whose interpretation of the proof makes it clear that many important critics of Jonas are too quick to reject his claims. The arguments of Jonas now seem to show a new strength even though they still fail to give an alternative to an objective idealist theological framework. (shrink)