(quote from RealReality.org/Real_Faith_and_Reason_Vol_2_-_Scientia.pdf)

Suppose I feel the word “presupposition” has more substance than being just made-up stuff, and I tell an unbeliever I base my reasoning on my presuppositions. Unfortunately, the unbeliever hears “made-up stuff” when I say “presuppositions.” Why should the unbeliever accept my made-up stuff as any better than his or her made-up stuff? The term “presupposition” can give the illusion truth has no more basis than made-up stuff.

It’s very effective to point out how disbelievers base their conclusions on presuppositions. They based their conclusions on made-up stuff. Ungodly thinking has no other choice. Once we point that out, we can show the difference between presuppositions and divine revelation.

Anyway, we ought to be clear that we don’t believe the Bible is God’s word simply because we’re pretending it is. We don’t believe the Bible is God’s word based on circumstantial evidence, which is always inconclusive. We believe the Bible is God’s word because the voice of the absolute God tells us the Bible is His word. Divine revelation is absolute truth. What God says is absolute. Divine leading requires a real relationship with Christ though.

(end quote)