During modern times, Luke's competence as a historian is questioned, depending upon one's a priori view of the supernatural.[37] Since post-Enlightenment historians work with methodological naturalism,[38][39] such historians would see a narrative that relates supernatural, fantastic things like angels, demons etc., as problematic as a historical source. Mark Powell claims that "it is doubtful whether the writing of history was ever Luke's intent. Luke wrote to proclaim, to persuade, and to interpret; he did not write to preserve records for posterity.