smiddy Your making the mistake of thinking the total years of ones life is a generation.
Taking all assumptions out of the equation and looking solely at the Bibles use of the term #generation we find this.
What is the Bible's definition of a Generation:
35 years: (Job 42:16, 17) "And Job continued living after this a hundred and forty years and came to
see his sons and his grandsons—four
generations.
37 years: Jerusalem was destroyed about 37 years later when Jesus said "this generation will by no means pass away"
38 years: Deut 2:14 - And the days that we walked from Ka′desh-bar′ne·a until we crossed the torrent valley of Ze′red were thirty-eight years, until all the generation of the men of war had come to their end.
(Mt 1:17) "All the
generations, then, from Abraham until David were fourteen generations, and from
David until the deportation to Babylon fourteen generations, and from the
deportation to Babylon until the Christ fourteen generations". When you
read the list in Matthew, none of them are described as overlapping:
65 years - Abraham to David
: 2018BCE -> 1107BCE / 14 generations
35 years - David to
deportation : 1107BCE -> 607BCE / 14 generations
45
years - Deportation to Christ :
607BCE -> 29CE / 14 generations