If God of Abraham is true, then why didnt he use his intelligent design to make a new

[Aliza]

I can't speak for Christianity, but Judaism believes what Judaism chooses to believe. You're of course welcome to have an opinion of what we "should" or "or should not" do based on whatever criteria you choose, but Judaism is defined only by what Jews believe.

Right, because the books are so muddled it's impossible to do anything but interpret them selectively. Really kind of goes against the whole 'we have the TRUTH' shtick they're always jawing on about.

When I start a new math class, I like to flip to the back of the book to see what I'm in for for the semester. The later chapters look very muddled to me, and I often wonder how I'll ever be able to work out the complex equations. But, as I work through the textbook and take my final exam, I find I've breezed through the class and am well prepared for the final. Calculus is not intended for people who haven't studied the basic principles of mathematicians. Likewise, Judaism is not intended for people who have no background in Jewish thought. If Judaism appears muddled to you then I'd imagine it's because you have no foundation in Jewish studies. It's most certainly not muddled to Jews. 

Jews do believe that we have the truth for Jews. We also believe there are many truths for many different groups of people. It's for this reason that Jews don't proselytize; it's because we legitimately believe that other people are just fine doing their own thing (with the caveat that they're not hurting us, themselves, or others, and are generally playing nice with the rest of human civilization.)