This chapter argues that it is both impossible and unnecessary to exclude religion from secular politics. Martin Hägglund claims that deconstruction entails a radical atheism, but Derrida suggests that political commitments are formally indistinguishable from religious faith insofar as they are both directed toward the unforeseeable future. Much as Dionysius orients himself toward an unknowable God, Derrida affirms a justice that is radically elusive. Political theorists such as Mark Lilla argue that religion and politics should be strictly separated, but my account of hope indicates that they are inseparable. Where secularism and theocracy both promise an impossible clarity, atheism and Christian thought share an uncertain hope.