More likely somewhat less that 2,500 years... near all if not all the stories claiming greater antiquity in the Septuagint were either stolen and then adapted or invented in a multitude of forms by way of disguised repetition. A novel as history in other words, one designed by intent to appear most ancient whilst being nothing but ruse and sleight of literary hand, cooked up by pupils of Plato's dictum at crafty work, thereby inventing by candle light a people of substance out of thin air...
I chose the figure of over 3,000 years for good reason. I am going to distinguish here between when the Torah or scriptures may have been written and when genuine historical events occurred. I am also using the C's as my source for the latter.
The C's have told us that the founder of Judaism was in fact a composite person who was both Abraham, Jacob and Moses. They confirmed Laura's view that Abraham/Moses was based in Egypt and led a small scale exodus (only 600 plus people) out of Egypt during the reign of Pharaoh Akhenaten, who is viewed by mainstream archaeologists as having reigned during the mid 14th century BC - which could though be as much as 200-300 years out. Abraham/Moses took the Pharaoh's wife, Queen Nefertiti, with him into the desert who then became Abraham's biblical wife Sarah (which could have been an Egyptian name "Sa-Ra"). In my view, her oldest daughter Princess Meritaten also became the biblical Hagar, Sarah's Egyptian maid servant and the mother of Abraham's son Ishmael. Hence, the C's confirmed that Abraham and Moses were not mythical personages but one individual instead. The C's also told us that Abraham, having been fooled by the Reptilians into believing he was communicating with his god Yahweh, eventually became tyrannical and was deposed as the leader of the group who are known in the Bible and to history as the Israelites, Joshua replacing him as leader. After several generations of wandering in the desert as nomadic pastoralists (the C's said as Bedouin Arabs) they fought a long series of battles against the various tribes or minor city states/kingdoms (such as that of the Philistines) who occupied or were located in the land of Canaan (later Palestine), which were all vassal states of Egypt, until under the leadership of King David, the people who emerged as the Israelites (no doubt a confederation of Semitic groups who lived in that region), established the Kingdom of Israel. It is at this point that history and archaeology take over, for their is archaeological evidence to support the existence of King David and the Kingdom of Israel and the C's have also confirmed that he really existed. In case you are not aware, most of what I have said here was covered in this extract from the transcripts:
Q: (L) Well, it seems that Nefertiti disappeared from history in the 12th year of the reign of Akhenaten. He then died in the 17th year of his reign. If Nefertiti was Sarah, where was she during this five year period, if Akhenaten died going after her when Abraham/Moses carried her off?
A: Locked up.
Q: (L) So,
Nefertiti is Sarah and Abraham came and rescued her somehow, is that correct?
A: Yes.
Q: (L) And that happened at the time of the passage of the comet cluster, between 1627 BC and 1588 BC - dramatic events which is what enabled that particular drama to take place...
A: Yes.
Q: (L) So Abraham retrieved Sarah and Akhenaten went after them and drowned in the river or something?
A: Close.
Q: (L) So, from 1627 BC to 1588 BC - that's 39 years - almost exactly 40 years of "wandering in the desert," so to say. So they must have escaped when Thera blew and forty years later, the comets came. What was Abraham and his crew doing during that time?
A:
Bedouins.
Q: (L) How many were in this tribe?
A: 623.
Q: (L) So it wasn't multiple thousands of people as the Bible would have us believe.
Okay, is Abraham the same individual as is presented as his son, Isaac?
A: No.
Q: (L) Did Sarah, known to the Egyptians as Nefertiti, give birth to a child when she was 90 years old?
A: No.
Q: (L) Was Sarah the mother of Isaac?
A: Yes.
Q: (L) Why did Abraham want to sacrifice his son?
A: Did not happen.
Q: (L) Who was
Hagar the Egyptian?
A:
Princess of Egypt.
Q: (L) Was she Sarah's maid?
A: No.
Q: (L) Was she Sarah's daughter?
A: Right nurture to.
Q: (L) What do you mean? I don't understand.
A:
Sara's daughter by Akhenaten.
Q: (L) Did Abraham have a child by Hagar also, his wife's daughter by another man?
A: Yes.
Q: (L) Well, that's pretty incestuous. Did Sarah actually get so jealous of her own daughter's child that she demanded that Abraham abandon her?
A: Close.
Q: (L) When did this tribe finally arrive in Israel and settle down. Was this after
40 years living as Bedouins?
A: Pretty much.
Q: (L) Well, I still have to deal with this King David issue. He was like a Robin Hood. Now, in another direction, what's this deal about Abraham talking to God. Is this where the whole monotheism came in?
A: Close.
Q: (L)
So, it started out with Abraham and his tribe. Did he have reinforcements of his Levite brothers who came and joined his tribe from Hittite land?
A: Close.
Q: (L) Are there any details of this story that I haven't covered that I ought to?
A:
David was a Levite.
Q: (L) Was he of the line of Abraham?
A: No.
Q: (L) Did he come from "Hittite land?"
A: Close.
Q: (L) How many generations before he was born did his family come to the area of Palestine?
A: 5.
Q: (L) Were they
relatives of Abraham?
A:
Somewhat.
Q: (L) Distantly related. So, what did David do? Came along and gathered the people together?
A: Yes.
Hence, there is definitely a core of truth to the legends of Abraham/Moses/Jacob and King David, although these have been much distorted and embellished as you correctly note, particularly when the Jewish scriptures were being collated (and rewritten) during the Babylonian exile of the Jewish people in the 6th century BC. Many, if not most, of the biblical stories were almost certainly passed on by oral tradition, as is true of groups like the Celts, who wrote little of their history down, and, indeed, the Bedouin Arabs who still live in Jordan and have a rich oral history. However, there is plenty of archaeological evidence to support the case for a long series of battles having been fought in Canaan during the period in question*, including the destruction of the ancient city of Jericho, the walls having been brought down by an earthquake according to the C's (was this a manmade quake as in the biblical account or a Reptilian intervention?).
I would certainly agree that many of the biblical stories may well have been inventions or borrowings from other cultures, e.g. , Samson, a Judge from the Tribe of Dan (the Danaans of the Iliad and later the Tuatha de Danaan of Irish legend perhaps?), is clearly a copy of the Greek hero Heracles, who may in turn have been based on the Sumerian Gilgamesh. However, you cannot simply dismiss the whole biblical story of the Israelites, who would eventually go on to become the Jewish people, as a complete work of fiction. The C's would certainly not agree with that viewpoint. If I have misunderstood you though, I do apologise.
*I can back this up with sources if you wish to investigate it further