The original Jewish Christians largely reverted to either Judaism or fled to Arabia to escape the persecution from what they considered to be an illigitimate church (Roman).
there are some theorists that Muhammed learned from them.
While Christians in general tend to be longer denizens than their Moslem couterparts throuhgout the middle east- i.e. Chritians of Iraq are the real Assyrians and of Egypt are the real Egyptians- the Pali Christians may have some Jewish or Greek colonist blood, the land was made quite desolate form the many genocidal wars with new colonists .
its interesting that the Bible states that it will be desolate when Gods people are not there.
Really?