I think you'll find them not from such different backgrounds at all.
Why is a child brought up in a Muslim community so statistically overwhemingly more likely to 'find' Mohammed, while a child brought up in a Christian community is statistically more likely to 'find' Jesus?
Who are you to say what a 'real' spiritual experience is?
When I was first taught Euler's identity,
![http://upload.wikimedia.org/math/c/2/c/c2cc760385a6ef275c61dc193e6ceaea.png [http://upload.wikimedia.org/math/c/2/c/c2cc760385a6ef275c61dc193e6ceaea.png]](http://upload.wikimedia.org/math/c/2/c/c2cc760385a6ef275c61dc193e6ceaea.png)
, I had what would tick all the boxes for a 'spiritual experience'. Before then I had thought of mathematics as a tool I use to do things or a useful language I spoke to communicate things, but Euler's identity is a tantalising hint at the absolute mathematical beauty of reality. It was like going from thinking you were using a spanner to realising the spanner was actually using you all along.
I have a very powerful emotional response to mathematics, in its elegance and beauty. I'm sure any computer programmers here with a natural aversion to 'ugly' code will appreciate this. It isn't about what is efficient or useful, it is about what is beautiful.
And on a more theological level, how do you know that your faith is in God? Let's take for granted that Moses had a 'spiritual experience' from some powerful supernatural entity that gave him the commandments, and that Jesus was sent to Earth by some powerful supernatural entity to influence humans and performed supernatural miracles.
How do you know that this powerful supernatural entity was actually God?
Surely the Devil, also a powerful supernatural entity, is just as capable of such miracles? When Moses recieved his supernatural messages, how could he tell the difference between a message sent by God and a message sent by Satan? How could we mere humans tell the difference whether Jesus was the son of God, or the son of Satan? When
you recieve your spiritual experience, how do you know that it
doesn't come from the Devil?
Both supernatural entities are powerful far beyond our comprehension, and both capable of performing miracles on Earth to influence us, and giving us spiritiual experiences within us - so how do we tell the difference between them? If God has created us to instinctively 'know' what is Him and what isn't, why would he require to send us 'spiritual experiences' to nudge us into faith?
It is possible that all that follow the Ten Commandments are following the instructions of the Devil, and all that worship Jesus Christ are worshipping the son of Satan. How would they know otherwise? And if they persist in this worship by faith, how will they ever see otherwise?