You are missing my point.Christianity, Jewish and Islamic religions all consider Abraham in the ancestery of their respective beliefs.The split between jews and the philistenes was before the common era.Thats when Christianity took off.
Your point is well-taken but it is not relevant to this matter.
The point requiring further info. of post #12 is: `When did this `Islam’ begin?’ so that religious scholars could speculate that it—and not Abraham—was the Beast referenced in John’s `Revelations.’
What is meant by 'split'? And the Philistines were gone about 500 years before Jesus.