Actually, as a student of Iranian history, those "Babylonian" era records are rather intriguing, to say the least. It seems to me Judaism (and associated myths) are a product of an aborted imperial social engineering project of the aborted first Persian Empire. Even the historic divide of religious Jews and "Greek Jews" reflects the sudden collapse of the first Persian Empire and its replacement by the Greeks.
A reading of relevant biblical texts strongly suggests that the 'returnees' from Babylon were alien to whoever was living in Jerusalem. And the religion they brought back smacks of Zoroastrianism in its theological contours. Heaven, hell, resurrection, judgment, angels, and good and evil: these are Iranian elements. (Egypt also had judgment, heaven, and hell.) It took a few attempts to get the inhabitants to change their religion -- it's in the book, as they say, so don't take my word for it.
Those famous boundaries of lands promised to Abraham, for example, which stop right at the border of historic Greater Iran and Egypt, are basically the boundaries of the project 'temple state' the Persians attempted to create as a prepatory step to conquering Egypt. Heck, the Persian Emperor is even specially called "Messiah" (Divine King) in Isa. 45.
It is my opinion (and just that) that the sudden cessation of [imported Jewish] religious leaders from Babylon -- a seat of Persian Empire at that time lest we forget -- due to the collapse of the empire, is the basis of the mutatation of the work-in-progress so that the "divine mandate" of the famous Abrahamic lands were now in fact given by none other than "GOD" itself.
The irony of course, is the blowback of this Persian Imperial project 2500 years later.
[minor corrective edits]