The mentions of Biblical persons and events, as I hinted in the previous comment, are cultural rather than theological, and can’t be used to establish theological continuity, no matter how hard the Ismaelite genealogy is pressed.
Can't the same argument be raise for Christianity? I'm sure at the time of Jesus he saw himself as rectifying Jewish practice (and of course there are the passages where he says that the old laws are still in force), but pretty quickly Christianity was modified and sold to gentiles (thanks to Paul, who never met Jesus and wrote 13* of the 27 books of the New Testament) and the Mosaic laws were mostly set aside.
The whole idea of "fulfillment theology" is that Jesus fulfilled the old covenant and established a new law. That is why Christians eat pork and so on.
* everyone agrees that three of those 13 weren't actually written by Paul, and three more are in various degrees of doubt
for the non-Bible side, lots of Germanic and Scandinavian folk stories have been rewritten as Christian-themes too
I’d argue that in some ways Rabbinical Judaism is as divergent as Christianity from ancient Judaism in many ways. There’s no following of the temple sacrifices or rites, etc, so new traditions have been added. The central role of Israel as a physical country changed for many (much early Zionism was viewed dimly by religious Jews and primarily embraced by secular Jews). The Talmud is roughly in a similar position as the New Testament, etc. I say that as an academic exercise in parallels and not to demean the differences or history. I just find the thought exercise intriguing.
https://www.biblegateway.com/passage/?search=Matthew%208&ver...
In general, to my ears “Abrahamic religions” is a forced academic classification, and doesn’t point to any actual spiritual kinship shared between the religions thus classified.
They all share the same god and the same origin story, and even share religious sites. Compare them to any other religion, and they are quite close.
Except that they don't share the same god.
The Christian God is triune, one God existing in the three distinct persons of Father, Son, and Spirit, which the Jews and Muslims both reject.
Further, though Judaism and Christianity agree that the only true creator God, YHWH (or Yahweh/Jehovah according to Christianity), has revealed himself in deeds and words, Islam says that his name is Allah.
And of course, fundamental to Christianity is the acknowledgement of the full humanity /and/ full divinity of Jesus of Nazareth, crucified and resurrected. Judaism and Islam both reject those beliefs, thus we again see a difference on who God is.
These three monotheistic religions each have separate conceptions of God.
The Protestant* god. Catholic and Orthodox disagree on that specific phrasing.
https://christianityfaq.com/catholic-protestant-christianity...
As a non-religious person, the differences between the Catholic, Orthodox and various Protestant faiths aren't dissimilar to the differences between them all and Islam and Judaism.
There's a lot of different ideas about what monotheism and God means within those three, highly related, religious families too.
It's very weird to single out islam in this way, seems political rather than historic or religious.
"Allah" is not a name, it's the Arabic word for "God".
> These three monotheistic religions each have separate conceptions of God.
Right, separate human conceptions of the same God.
Therefore the idea that Abrahamic religions relate to the same God can only make sense from a perspective of faith.
Apples and oranges are quite close when compared to chairs and tables, but they’re different.
Regarding the “same God” thing, you’re two thirds right, Islam being the other third.
That one person being Abraham. Hence "Abrahamic". If the adjective were "Davidic" you'd have a point, but the whole premise of the "Abrahamic religions" label is that they trace their religious genealogy back to Abraham. The label makes no claim about any shared history since then.
EDIT: And as far as your claim of a lack of spiritual kinship—do you know anything about any of the non-Abrahamic religions? When you set Hinduism or Shinto into the mix, Islam practically looks like a sect of Christianity.