Faith first, everything else falls into play after that.Case in point. Last year, while washing my car, I had a Jehova Witness over, wishing to speak to me. I said yeh, have a go. Usually, in such an argument, I would have just said that I am not up for a change of viewpoint. Now, I am very willing to be convinced; if the person can prove his deity's power by means of prayer, I am sold. If he can prove that he can direct a lightning bolt from a clear blue sky, or summon down a beam of fire from above, I will go to his church and worship his deity beside him.
As you can guess, no lightning, firebolts or telekinesis. I destroyed every argument he had,
I don't understand why you'd ask a Christian to prove God with God's power, unless you were just trying to be condescending towards him.
You want God to come to you on your terms but that isn't how God works. If you have no faith in God, you're stuck. Think about it.