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.
Therefore the idea that Abrahamic religions relate to the same God can only make sense from a perspective of faith.
"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.
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.