The data of divine revelation intensify philosophical investigation. In response to this determination of philosophy shared by, for example, German Idealism and French phenomenology, William C. Hackett offers a set of basic qualifications that seem to follow from the manner in which the latter school has articulated itself in its two leading figures, Jean-Luc Marion and Jean-Yves Lacoste. Two initial concepts ("eschatologicity' and "conditionlessness') present themselves as crucial to the philosophy of revelation in phenomenological form. These are clarified in a preliminary way.