Re: Jesus, not the first
I disagree - faith and belief are completely based on facts. Some are misguided, some are unexplained, some are wrong, but they are facts. Example: The Bible. Foundation for the Christian belief system. It is a fact that it exists, was written by people who believe in god, holds may tales and legends borrowed, fabricated, altered, etc and is the basis for many people's faith.
Some people see jesus in the clouds and thus believe in god. That's another fact - there can indeed be clouds that look like jesus.
Some people believe god exists because of the goodness in mankind. Another fact.
Belief is indeed routed in facts, or perhaps just in the interpretation of them. Otherwise, people would never feel so strongly about it. Your own example about different perceptions of one incident actually a good parable for religious belief - take one view and never go further with it - but it is still based on a fact. I can't see any reason someone would choose to defend or uphold something that has literally no basis in the real world.
As for similarities in religion, go back and read about the switch from polytheism to (briefly) monotheism in ancient Egypt. You may notice at the time that the people who would become the jews were slaves and knowing that Christianity and Islam have very similar geographical and cultural developments, you'll realize that one pharaoh's brief stint in one god has its roots there.
A simple souvenir of someone's kill
And like the sea
I'm constantly changing from calm to ill
Madness fills my heart and soul as if the great divide could swallow me whole
oh, how I'm breaking down