This essay follows the assumption that the first principle of classical metaphysics has its counterpart in political sovereignty as suprema potestas. Therefore, both can be equally described as arché. Their epitome is the God of so-called ontotheology, who thus proves to be what I call the Ur-Arché. In contrast to current post-metaphysical approaches, however, I suggest overcoming ontotheology through a different metaphysics, which emphasizes the self-transcending surplus character of being. I regard early Christian martyrdom as an eminent way in which (...) the surplus of being is manifested. This has two interwoven aspects, one ontological and one political, both arising from the excessive idea of the Christ event, or the notion that there is life beyond life unto death. I will analyse the mechanism allowing early Christian martyrs to counteract Roman imperial sovereignty. Finally, I will relate this to contemporary life systems in which sovereignty has become anonymous biopower. (shrink)