How many centuries after Ishmael did Mohammed have his “vision” that began islam? Do we know for certain that he was a descendant of Ishmael?
According to Dr. George Grant, Mohammed first went to the Jews and informed them that he was the Messiah they were looking for. When they rejected him he went to the Christians claiming that he, not Christ, was the Messiah. When they rejected him he created Islam and the rejections by both Christians and Jews brought his hatred and wrath.
Yes, I agree, it is all conjecture upon all 3 religions.
Hence the conflict, gentiles, jews and arabs.
There is no evidence at all that muslims are in any way related to Ishmael. This is just another story invented by mohammed.