The logical fallacy of a-priorism occurs when any and all evidence against a conclusion is discarded without any rational reason for discarding the evidence other than that it conflicts with the desired conclusion. This is a form of stacking the deck.
Sandy: "Prove that God exists."
Rocky: "It's impossible to prove anything to a person who will not objectively look at the evidence. God says that He made Himself so obvious through the things that He created that anyone who refuses to acknowledge Him is without excuse. I know that Jesus Christ is God because He has revealed that to me personally, and He leads me and teaches me moment by moment. You can verify this to yourself by seeking Him sincerely in humility with a will to do His will and to submit yourself to Him as your God."
Sandy: "That's all personal experience and I'm not going to submit myself to any God."