The elapsed time from Creation to Incarnation depends on the chosen options regarding 4 issues:
The textual tradition: Masoretic Text (MT) or Septuagint (LXX).
The age at which Terah begot Abraham: 70 or 130 years.
The time elapsed since Jacob's entry into Egypt to the Exodus: 215 or 430 years.
The year of Jesus' birth: from 7 BC to 1 BC.
In the case of the LXX there are two additional issues: whether or not to include the 2nd Cainan (who is in Luke's genealogy) and whether or not to correct Methuselah's begetting age from 167 to 187 years so as to avoid his outliving the Flood 14 years. The range of additional years of the elapsed time with respect to that from the MT is between these two cases:
No Cainan 2, Methuselah begets at 167 (Eusebius' Chronicon): MT + 1236
Cainan 2, Methuselah begets at 187 (Codex Alexandrinus): MT + 1386
A very good introduction to issues 2 & 3 and links to further bibliography can be found in [1], together with the 8 chronologies, 4 from Usher and 4 from Thiele, which result from the combinations of options.
As can be seen in [1], the Usher and Thiele chronologies agree on the set of 4 AM years of beginning of construction of the First Temple and disagree on the only BC year, which for the Usher chronologies is 1012 BC and for the Thiele chronologies is 967 BC. At present, scholars agree almost unanimously that the Thiele chronology of BC dates till Solomon is correct.
The following table gives the BC year of Creation in each of the Thiele chronologies that result from each combination of choices on issues 2 and 3.
------------+--------------+-------------+
Abraham's | Israel's sojourn in Egypt |
Birth | Short: 215 y | Long: 430 y |
------------+--------------+-------------+
Early: when | Thiele II | Thiele IV |
Terah is 70 | 3899 BC | 4114 BC |
------------+--------------+-------------+
Late: when | Thiele I | Thiele III |
Terah is 130| 3959 BC | 4174 BC |
------------+--------------+-------------+
Notably, the NT records that St. Stephen and St. Paul adopted for issues 2 and 3 respectively the options that make up Thiele I chronology:
"Then he [Abraham] left the land of the Chaldeans and settled in
Haran. And from there, after his father died, God had him move to
this country in which you are now living." (Acts 7:4)
If Abraham departed from Haran - which he did when he was 75 years old (Gen 12:4) - after Terah died - which he did in Haran at the age of 205 years (Gen 11:32) - then Abraham was born when Terah was 205 - 75 = 130 years old.
"Now the promises [of Gen 15:18] were spoken to Abraham and to his
seed. He does not say, “And to seeds,” as one would in referring to
many, but rather as in referring to one, “And to your seed,” that is,
Christ. What I am saying is this: the Law, which came 430 years
later, does not invalidate a covenant previously ratified by God, so
as to nullify the promise." (Gal 3:16-17)
Assuming that Gen 15:18 was in the same year as Gen 12:3, i.e. when Abraham was 75 years old, then the length of Israel's sojourn in Egypt was:
430 - 130 - 60 - 25 = 215
where:
130 = Jacob's age at entry into Egypt
60 = Isaac's begetting age
25 = time since Gen 15:18 to Isaac's birth when Abraham was 100 years old
Independently from the view of Paul, a 215-year sojourn in Egypt is supported by Ex 6:16-20, which is incompatible with a 430-year stay but lends itself readily to a 215-stay if we assume that Kohath was born just before entering Egypt and that he and his son Amram fathered their respective sons in the middle of their lifetimes, so that: (133 + 137) / 2 + 80 = 215.
Starting from the beginning of construction of the First Temple in the 2nd month of 967 BC, it is easy to reckon that, if the civil year started in Nisan, the dedication of the Temple occurred in the 7th month of 959 BC, i.e. in the 7th month of 3001 AM. This led me to state the hypothesis that the author within the P source of the Pentateuchal text who wrote the chronologies devised them precisely to fix the dedication of the Temple in the year 3001 AM, i.e. at the beginning of the fourth millenium AM, thus echoeing the creation of the sun and the moon on the fourth day to "be for signs, and for seasons, and for days, and years" (Gen 1:14).
I personally hold that Jesus was conceived and born in 8 BC and 7 BC respectively. This implies that, since in the Thiele I chronology AM year + BC year = 3960, He was conceived and born in 3952 AM and 3953 AM respectively. Since Creation was in 1 AM by definition, Jesus was born 3952 years after Creation.
Reference
[1] https://creationwiki.org/Biblical_chronology_dispute
