  While the details of grounding might be controversial it may be assumed that reformed epistemologists  assert that ordinary religious experiences of awe, gratitude, contrition, etc., ground the beliefs implied by the believer’s sincere reports of such experiences, provided they can be said to cause those beliefs. Such grounded beliefs are warranted provided they can be defended against known objections. They can then be used as evidence for further religious beliefs. Thus if religious experience grounds the belief that God has forgiven you for doing what is wrong to other humans beings, then that is evidence for a personal God who acts in a morally upright fashion. For, it can be argued, only such a God would find anything to forgive in the wrongs you do to your fellow human beings.