Sabaeans seem to have had some apocryphal1 writings which have not come down to us;
but Arabia contained many varieties of religious belief, and Muhammad, when he began his work, could
not appeal to any volume the authority of which was universally recognized. There were other
"book-religions" besides the Sabaean well represented in the country. The Jews were then a
great power 2 in Arabia, being very numerous and constituting many distinct and powerful
tribes, as the Bani Quraidhah, the Bani Qainuqa'a, the Bani Nadhir, and many others. Their political
union enabled them in after years to oppose Muhammad by force of arms when he endeavoured to compel
them to submit to his claims. Although they do not seem to have been distinguished for learning,3
yet they doubtless preserved their ancestral veneration for the books of the Old Testament, and
there