As the pastor says, for those who don’t want to believe, no proof is strong enough.
What does God say about miracles and signs? That is not an easy answer, it is complex. Get your Bible out and do some reading.
So why is everyone interested in this shroud? What are the results? What is the purpose of a miracle?
Harod was eager to meet Jesus to see a miracle/sign, to be entertained.
Stop and think. What was your first thought when you read this article? For many it was, this proves I am right and others are wrong. Did eyes focus on details and science? Was your first thought about God?
Do you now believe God because of this shroud? Have you repented and turned to God because of this shroud?
or have you been entertained?
Your proposition also then applies to Jesus Christ's entire ministry and life on earth.
Most atheists say (and indeed the Romans of his day) that his miracles were mere magic tricks to entertain the masses, and nice fiction for his followers to spread.