If you want to rely upon a man's philosophical musings, then I wish you well.
Paine is (by his opinion) ruling out God so why should he believe in the miraculous being done? Paine is relying on his reason and intelligence to systemically disprove Christianity. That is fine for him. But humans are limited in wisdom. He can be no more certain of the spirit world than anyone else on either side of the debate. Relying upon the reasoning of a man is an invitation to flaws.
Convenient. Not only are you attempting to sell me a placebo, you're telling me to believe in god based not only on self-fulfilling prophecies and placebos, but also on the basis of what is known in psychological circles as a self-perpetuating delusion.