Greetings Phiz,
Thanks for adding your comments…
With respect, I am not convinced the authors of the Koran knew the facts as well as you think they did. To start with, they didn't state Jesus' resurrection explicitly. You have to admit that any reference in Sura 89 to Jesus' resurrection is oblique and cryptic, and could be no more than happenstance. The definitions of words from Lane's lexicon include many possible meanings, and most of them are irrelevant to your hypothesis.
Perhaps….instead of generalizing…you could bring forth direct objections to what I have already posted…
The authors of the Koran misunderstood the doctrine of the Trinity - and so I am not surprised they rejected it as false. You can't refute something until you have understood it. (Come to think of it, all the Muslim rebuttals of the Trinity on this website also misunderstand the Trinity and therefore they are beside the point. Muslim arguments against the Trinity are fallacious because they attack a distorted version of the doctrine of the Trinity, which does not constitute an attack on the Trinity itself. They are merely attacking a straw man!)
Since the authors of the Koran misunderstood the Trinity, why give them credit for understanding the death and resurrection of Jesus of Nazareth?
I think that you need to invest some time in understanding what the Koran proclaims itself to be in the first place.
Once you are cognizant that the Koran’s whole premise is based upon collecting previous Jewish and Christian scriptures, then you will begin to understand that the Koran can never stray too far from its source material…
Thanks…