> "if God undeniably existed, then faith would no longer be applicable."
I kind of see both sides of that.
On the "agree" side, I saw a quote somewhere that said, "that's why it's called 'faith' instead of 'reading comprehension'." If it were that cut and dried, then it would just be a matter of objectively evaluating the evidence, without even any "probably".
On the "disagree" side, the point of faith isn't really the existence of God. Yes, that's the starting point. But much further than that, the point is that we need God's forgiveness - a forgiveness that is completely unreasonable. Faith is "you have, I need, please give" (contrast with love, which is "I have, you need, I give"). The difference between those two postures is why it is faith, rather than love, that is the fundamental bottom line in dealing with God. Knowledge - even certainty - that God exists doesn't remove the need for a faith that goes beyond mere knowledge.