Hmmm, the precise manner in which the Holy Spirit witnesses to our spirit is what I've been trying to ascertain in this discussion... For me, parts (a) and (c) constitute part (b), so long as (c) arises from agape love.

Anyway, you have raised another interesting issue. Do you believe that God enables any man to infallibly know anything? We don't dispute that God could do so if He so chose; but does He actually do so in relation to ANY subject in this life? And equally to the point, can the devil deceive us so that we believe we have infallible knowledge of any given fact? (The issue is not about the necessity for infalliuble certainty of any given fact, for we can know things to be true without receiving an infallible persuasion that they are so; rather, I am trying to tell if infallible certainty is something God imparts to man on any given issue, or are such persuasions of infallible certainty more likely to come from the pit?)