The questions asked by epistemologists apply to religious beliefs and propositions whether they seem rational, justified, warranted, reasonable, based on evidence and so on.
[1] Reformed epistemology has mainly developed in contemporary Christian religious epistemology, as in the work of Alvin Plantinga (born 1932), William P. Alston (1921-2009), Nicholas Wolterstorff (born 1932) and Kelly James Clark,[2] as a critique of and alternative to the idea of "evidentialism" of the sort proposed by W. K. Clifford (1845-1879).
[3][4] Alvin Plantinga, for instance, is critical of the evidentialist analysis of knowledge provided by Richard Feldman and by Earl Conee.
By means of this alleged criterion the foundationalist claims to discern which epistemic practices are rational and which are not.
[9] Some work in recent epistemology of religion discusses various challenges from psychology, cognitive science or evolutionary biology to the rationality or justification of religious beliefs.