This too is not unique, though: Kierkegaard and Patočka also include this explicitly--not to mention the passages from the Bible that Derrida discusses. Where Derrida is perhaps unique is in his elaboration of this dual structure of responsibility and apprehension as a double bind: that is, as a dual structure that, extended to encompass both the implications of finitude and infinitude that split it, in fact rends it apart (i.e. makes the dual structure incompatible to itself) in its being constituted thus. In other words, Derrida rigorously thinks the space between the determining forces of finitude and infinitude qua between, qua difference. And, as he shows, in order for this difference to be rigorously sustained, it must be conceived as différance.
This différance is manifest in the trembling both before God (the infinite) and before death (the finite), in the experience of what Derrida calls a gift of death.