Nathan Rinne is a Lutheran writer, and Lutherans are quite fond of holding out to Reformed folks that there are things that God just consigns to mystery, and we are best not to inquire about them. [Reformed theologians go with the things which “by good and necessary consequence may be deduced from Scripture”, but that is a no-no for Lutherans, as I understand it].
So here we have a Lutheran, who is more than willing to have those “rough edges” at the border of the “formal proximate object of faith”, in a discussion with a Roman Catholic, who blows right beyond “good and necessary” deductions and resides squarely in the infallible certitude “of a principled, rather than an “ad hoc” way of arriving at the boundaries of “the formal proximate object of faith”. A “principled” way of determining the content of “divine revelation” as opposed to what is merely “human opinion”.
I hope these two men continue the discussion.