I’m aware that a discussion has been had on the influence of Zoroastrianism on Early Judaism. I’ve been reading the Gathas recently, the earliest texts of the Zoroastrian religion, probably composed by Zoroaster himself (possibly dating to around 1000BC, and I have to say, that it’s a poor match for biblical monotheism, perhaps due to verses such as this:
“we worship the Cow’s Soul and her Maker; and our own souls, and those of the livestock that seek our favour… and the souls of the wild creatures that are harmless we worship. And the souls of the followers of Right we worship…”
This doesn’t exactly sound like monotheism to me, alongside other early Yasnas.
Jon Levenson also points out that the earliest unambiguous reference to resurrection of the dead in Judaism, that of Daniel 12, doesn’t match the expectation as found in Zoroastrianism, and in fact has much better parallels in earlier Canaanite stories. Most importantly, it mentions the dead awakening from the dust of the earth, which contrasts with Zoroastrians, who didn’t bury their dead. So the idea of resurrection was probably indigenous to Israel.
None of this is to suggest that Zoroastrianism and Judaism had no interaction in antiquity, but I doubt that it ‘alone’ could have been the source for belief in monotheism or resurrection. @Sealkin @gbrooks9