[Updated: 2021.02.23]
Before the Christian Era, there was no "0" year until a Christian pope—in 525 CE—retroactively guestimated "AD"; and we've now proven that he was off by 7 years!!!
Thus, before 525 CE, there was no "zero year" calendar to keep up with anyone's birth year, or birthday. One couldn't think back to being born in the year #### and keep up with their age from that point because no one had a calendar and there was no fixed numbering of years. One could only remember their earliest memory of who was king in which country; year ## of the reign of [whomever]—with no fixed calendar date for that. For the average person, there was no historical record. For most people, the past wasn't considered important. Israelis probably remembered when they became an adult (men at 13, women when they were 12). Girls eventually reached womanhood (puberty) and boys eventually grew a beard—entering Za•qeinꞋ-hood. People's hair eventually turned gray—at which point they entered the "Sage" generation. One's lifespan was marked by physical and numerological, not chronological, markers. One's 120 "year" allotment, or as much of it as was earned, was crunched into however many chronological years one lived.
"The expectation of life at birth is the most efficient index of the general level of mortality of a population. In ancient Greece and Rome the average life expectancy was about 28 years." (britannica.com)
The expectation of life at birth during the time of Av•râ•
Thus, זָקֵן would refer, not to someone over 65 years old or a centenarian, as we think of today, but someone in their last few years – roughly 25-29 years old! Then two things mesh with science and logic: that זָקֵן is such a close cognate of זָקָן, which apparently indicated a זָקֵן, and that Av•râ•
Yet, this seems an inescapably glaring contradiction of the Biblical account, which gives the age of Av•râ•
The Encyclopedia Judaica notes: "Babylonian tradition attributes exaggerated longevity—tens of thousands of years—to its heroes… If the biblical story be compared with the prevailing Babylonian tradition, the many years of Methuselah seem a modest, even a short life-span. The Bible diminished the exaggerated ages attributed to people in the Ancient Near East, but still preserved the tradition of assigning extraordinary longevity to great men." (Methuselah, 11.1447-8).
The principle of Tᵊhil•god must have a lifespan of god-days, not ordinary mortal days."
While the Abrahamic tradition differed significantly, still, the Orthodox rabbis who edited the Artscroll "Bereshis" observed: "N'tziv notes that sometimes the Torah lists the larger number of years first and then the smaller number [as in the case of Adam: nine hundred years and thirty years] while sometimes the procedure is reversed as in 5:8. He explains that when the closing years of a person's life are relatively as productive and righteous as the bulk of his lifetime, the larger figure is given first, the implication being that all of his years were as productive as the major period of his life." (Artscroll Bereishis I.169).
Thus, as we should expect, a clear evolution from the prevailing tradition of the Ancient Near East is evident with the similar correlation in Tor•
From this perspective, the description in bᵊ-Reish•
bᵊ-Reish•
(And he trusted in י‑‑ה; and he considered it [to be] a צְדָקָה for him.)
Either way, this passage echoes a remnant of the Ancient Near East environment in which a צְדָקָה is considered redemptive, remitting transgressions – paralleling שְׁמִטָּה – remission… = 7 years.
This doesn't yet solve all of the problem. When we examine the ages of the "righteous nobles" in this chapter divided by שְׁמִטָּה=7, the ages fall remarkably within the rough parameters determined by scientists! Peering behind the honorific years, Av•râ•
But
In the case of
The zᵊqein•imꞋ were the patriarchal governing body (tribal chiefs) complementing the Sho•phᵊt•imꞋ. Only peripherally involved in litigation in the Bât•eiꞋ-Din, the primary function of the zᵊqein•imꞋ was in the area of family and patriarchal interests at a particular level or capacity (municipal, district, Ko•han•imꞋ, and tribal). The zᵊqein•imꞋ were primarily involved with five laws: (1) blood redemption, (2) expiation of murder by an unknown perpetrator, (3) a rebellious son, (4) defamation of a virgin, and (5) a levirate. ("Elder," EJ, 6:578).
Zâ•qeinꞋ corresponds, via LXX, to the Hellenist concept of πρεσβυτερος (presbuteros; elders). See also The Nᵊtzâr•imꞋ Reconstruction of Hebrew Ma•tit•yâhꞋu (NHM) Note 15.2.3.