Personally speaking, if I want to explain to a YEC believer, or anybody else, that “the genealogies of Genesis cannot be used to construct any sort of chronological timeline”, I like to move forward at least a century in terms of the best scholarship and take them through the clear evidence in the antediluvian numbers themselves (i.e., all of the ages in the Adam to Noah portion of the genealogy) that they can’t be actual “literal” ages of those patriarchs. I’m not referring to the absurd magnitude in many hundreds of years but because:
(1) The numbers reflect the sexegesimal number system used in Mesoptomia until around 2000 B.C.
(2) They have symbolic meanings with heavy reliance on multiples of 60 years and 60 months (which thereby spawns multiples of 5 years), for example, just to mention a few of the symbolic patterns going on there. Of course, the special nature of 60 as the basis for their base-60 number system and the fact that 60+60=120 explains why 120 years was considered the ideal age at death for a virtuous hero. This explains why both Moses and Joseph were assigned those ages. (Personally, I doubt that they ACTUALLY died at age 120. Perhaps they did, and most likely they were at least quite old, but we just can’t take the numbers from that era of those cultures as for-certain “literal” numbers. This is a good example of how the text doesn’t have to be “literal” in order to be true. If people in that culture understand someone dying at age 120 to indicate that they were a great hero and were wonderfully blessed by God to fulfill his purposes for them, we should accept the text on its own terms and understand it as communicating an important truth! (I think of it as a kind of “number idiom.” Of course, a “symbolic number” is more conventional nomenclature.)
(3) The fact that the final digit of all of the antediluvian ages is always from the set of digits {0,2,5,7,9} and never from the set {1,3,4,6,8} should be a huge red flag that something special is going on. If the Adam-through-Noah genealogy ages were actual ages, we would expect them to be randomly distributed but they aren’t. Indeed, the chances of all of those aforementioned numbers ending in a {0,2,5,7,9} and never in a {1,3,4,6,8} is about one in a billion. So that should be a huge red flag that these are numbers meant to communicate a symbolic message and not an actual age.
Come to think of it, I don’t see these facts mentioned a lot on forums, but I was reminded of them earlier today. I think I first recall them from the 1970’s when computers started crunching such numbers.
I’m curious, though. Are these views on the Adam-to-Noah ages generally accepted as explaining antediluvian longevity by most Biologos forum participants? I’m assuming that young earth proponents on this forum reject them but everybody else is at least open to them?? Just wondering.