I see nothing remotely like 'circuitous long routes' in mattityahu's questioning style ... it's a while since I have seen anybody ask such precise, brief and clear questions.

Rather Yusuf's attempt to divert the conversation to the origins of the New Testament is what I would call a 'long route' ... do precise questions not deserve precise answers?
Since we are in the 'Clarifications about Islam' section it would be great to find the Islamic information which was asked for.
Anything else would be better placed in the 'Comparative Religions' section and doesn't belong here at all.
Anyway, I found the question the OP asked a very interesting one, and I am looking forward to reading and learning more as this thread progresses.
Peace