[split] "Christianity makes me afraid."

[APeacefulWarrior]

Don't all 3 religions (Christianity, Islam and Judaism) have the first 5 books of the old testament as their common foundation? Those books that have the creepiest of the creepy stuff, including jihad...found in all 3? and which predate both Jesus and Mohammed?  

Kinda-sorta.  Islam sees itself in the same tradition/lineage as Judaism and Christianity, and all of the OT prophets are also considered prophets in Islam. (Although they often get Arabized names, like "Ibrahim" rather than "Abraham.") It shares the same basic cosmology as well, with God and Satan and angels and soforth.  Islam also sees Jesus as a prophet of the line of David, but nothing else.  One of their main points of contention with Christianity is the worship of Christ directly, which they see as idolatry, but he's discussed and his teachings are considered useful.

For that matter, the Halal dietary system is based on the Jewish Kosher laws, but is less restrictive.  

But that's about as far as the direct connection goes, because the teachings of Mohammed are (to Islam) setting the record straight as it were, so many of the stories about the prophets are significantly different.  Another amusing detail is that the Quran actually devotes more time to telling the story of Mary-mother-of-Jesus than the Bible does!  However, as I'm not Muslim and haven't studied the Quran extensively, I'm not terribly familiar with the changes.  

The whole concept of "Jihad" is tricky, and I'm not sure if my college-history-classes background is enough to tackle it, but the short version is that it's often misinterpreted in the west.  It's generally supposed  to be seen as the internal struggle to uphold personal faith, not a call for crusade or the brutal horrors that ISIS is perpetrating.  The Quran actually has very detailed rules on when it's acceptable -or not- to go to war.  Although, of course, nothing prevents the dedicated warmongers from ignoring those rules.

(It also has, afaik, the first hard rules on the humane treatment of POWs.   Which is something else that's often ignored.)

Why the Mosaic laws? They have nothing to do with Jesus, except for historical continuity. If anything, the old testament books, including those at the time of Moses, are the most tainted of all. They have a clear STS influence.

Just for context.  I personally view Jesus as a reformist, so I think it's important to understand what he's reforming.  Otherwise a lot of the material wouldn't make much sense.    I didn't mean to imply the Mosaic Laws should be studied for their own merits, but just as you say for the historical basis.  

And the same for the various "passion" accounts.  It's still important to know how\why he died, even if some of the fine details (like his exact last words) got lost over the ages.

(EDIT)

Come to think of it, have any of the major channeled sources discussed Mohammed\Islam in any depth? I'd be curious to know what perspective they have on it. Ra only mentioned Mohammed very briefly in passing at the end of 2.2, and never brought him up again. Although his comment would seem to suggest Mohammed was a Wanderer who did receive a message from higher-up, since he uses the word "delivered" in reference to Mohammed's teachings.

(And according to the stories, the first verses of the Quran were dictated to Mohammed directly via one of the Archangels -Gabriel, iirc- which would generally track with how Wanderers were contacted back then.)