From what I have studied, it is clear that our forefathers meant freedom for all religions, which means ALL. Whether you are Jewish, Christian , Muslim, Scientologist etc. That is the beauty of the basis of our rights. As to the point that there are similarities between the Bible and Koran. The same can be said for the Torah. All three text are based on the word of God so why would we expect he (or she ;) ) to provide different themes?
Facingeast