Christian origins reference request

Can anyone provide a source that says to the effect that Christianity and Judaism originate from a religion that existed in Israel in the 1st millennium BC that called their God something that in English might have sounded like Yahweh? (I asked the same question on biblical hermeneutics [here](https://hermeneutics.stackexchange.com/questions/74832/christian-origins-reference-request) , but was closed as off topic)