Hi Traci.
I would recommend not arguing that supernatural beliefs are resonable. I think that’s the wrong way to go about it.
Supernatural things are beyond our ability to reason them. That is why the Catholic Church calls them “Mysteries of faith.” That God would come down from Heaven and become man, the virgin birth, that Christ rose from the dead, that bread and wine could be turned into the body and blood of our Lord - these are things which are not attainable through human reason and intellect. I don’t think that you can argue that they are reasonable. They are very unreasonable - they simply don’t make sense!
I recommend agreeing with your friend that these things are totally unreasonable. That will probably take him by surprise! What you are trying to do by admitting this is trying to help your friend see that one does not need to understand something in order to be able to believe in it. Your friend is probably using the word “Unreasonable” as a way of saying, “I can’t understand it therefor I refuse to believe it.”
The fact is that he probably already believes in many things whichare “Unreasonable”; things which he does not fully understand but which are very real to him.
Ask him if he has ever fallen in love with a woman and ask him to explain the feeling to you. Was what he felt “Reasonable?” Where did that ache in his heart come from? What caused it? Why did this one woman cause it and not the woman right next to her? Was the way he acted “Reasonable?” He probably had nearly uncontrollable desires, could hardly eat or sleep, she was all he could think about, etc. How does one “Reason” that? Yet his love was very very real.
The way we feel when we miss someone who has died is unreasonable. It doesn’t make sense. Bravery. Guilt. Joy. Ghosts. Bigfoot. UFO’s. The fact that we all have to die. That somone could kill another person over a candy bar or a dollar. That that stupid &%$#@ <insert president you don’t like here> is in the whitehouse… Heck, if you ask me, the Big Bang theory, human DNA and eyeballs are all pretty unreasonable. Ever look at a butterfly close up? A butterfly is completely unreasonable!
See what I mean?
Our religion is not a religion of reasonableness. Chritianity is radical departure from reason, where you are asked to believe in dragons and monsters and knights in shing armor and fairies and that a frog could turn into a prince and live with the princess happily ever after. (GK Chesterton where are you?)
You won’t have overnight results. There is no “Easy” button for people like this. It takes lots of time, patience and prayer. Sometimes all you can do is plant a seed and hope it grows.
I hope I’ve helped in some small way.
-Tim-