Sorry if this is a bit late (it was midnight here and I needed some sleep,I'm up at 5 in the mornings)
My friend was reading the Gospel of Matthew and said he saw a flaming cross in front of him. This confirmed the Gospel for him. He was never into it until that day. now, he can't stop talking about it.
Things like that are why you can't convince me that it's false.
Again this only happened after reading the bible and not before.
Remember I do not read religious books, so my point is that I have never seen anything to make me think "thats a sign from god and therefor I must go and read this or that religious book".
Could your friend have been very tired and simply had a quite realistic dream ?
Any evidence, any burn marks left by the flaming cross?
I guess he was alone and not ,for example, reading in the park where there could be other witnesses.
In fact, to keep it simple, are there any signs from god(s) anywhere in the world that I could go and have a look at?
Anything at all anywhere.