Oh, here’s another: if you pulled out of either one everything that came from the Bible and attendant Christian doctrines, there would be almost nothing left.
I remember surmising something to that effect in south-semitic (i.e., Arabic) resources library at the University of Minnesota many moons ago when I was young and foolish. Someone whispered to me to shut up, or there would be trouble. Little did I know how right he was.