The following is a chart that I took from scripture(NKJV) Genesis. It starts at the first year(0) or at 4000(an approximate beginning year).

The legend is: the name followed by their year of birth as if year 0 was the first year Adam lived. The second number is their age when they begat their son who’s name follows theirs. The third number is the date they died if 0 is the first year. The fourth number is the year they died if 4000 is the beginning date. If you think that some other number is the first year, all you have to do is add or subtract accordingly. The numbers are from Genesis.

The number that follows the line is how long they lived.

4000 3500 3000 2500 2344 2000
0     500  1000 1500 1656 2000
Adam 0 130 – age when he begat Seth 930 3070
——————————————————- 930
Seth 130 105 – age when he begat Enosh 1042 2958
——————————————————— 912
Enosh 235 90 1140 2860
——————————————————— 905
Cainan 325 70 1235 2765
———————————————————- 910
Mahalalel 395 65 1290 2710
———————————————————- 895
Jared 460 162 1422 2578
———————————————————– 962
Enoch 622 65 987 3013
—————– 365
Methuselah 687 187 1656 2344
———————————————————— 969
Lamech 874 182 1651 2349
———————————————— 777
Noah 1056 500 600 2006 1994
—————————————————————- 950

The year of the flood is 1656 based on 0 or 2344 based on 4000.

Noah is 600 when the flood starts.

Shem 1556 100 2156 1844
—————————————- 600

Dates here and after are either that date or plus 2 based on years after flood.
Arphaxad  (1656 or 1658) 35 2094 1906
——————————- 438
Salah 1691 30 2127 1873
——————————- 436
Eber 1721 34 2185 1815
—————————— 464
Peleg 1755 30 1994 2006
——————- 239

Reu 1785 32 2024 1976
—————— 239
Serug 1817 30 2047 1953
—————— 230
Nahor 1847 29 1995 2005
———— 148
Terah 1876 70 2081 1919
———– 205

The year in the middle is 2000 from either 0 or 4000.

Abraham is in the middle of the time before Jesus according to NKJV.

Abram/Abraham  1946 100 2121 1879
———– 175
Isaac 2046 60 2226 1774
————- 180
Jacob 2106 2253 1747

———— 147

Notes:

Shem dies when Jacob is 50 years old

11 generations are alive from Noah to Abram at one time.
Shem lives 35 years after Abraham dies.

Peleg and Nahor die before Noah does.

Shem outlives all his offspring except Eber, Isaac and Jacob.

Abraham dies before Shem.

Dates in the final column are calculated based on 4000 years before Jesus being the beginning. If you think that the actual beginning date was 4004 then add 4 to each final column number. If you think it was 3996 then subtract 4 from the final number, etc.
Example: If you think 4004 is the right number then Adam would read 130 930 3074. Seth would read: 130 105 1042 2962.

This chart is to put into perspective the time before Jesus, the flood and Abraham. Many things in the Bible are clearer when you understand this information. If I have time I will put up the other two charts I made based on the linage of Jesus through Joseph(Matthew) and Mary(Luke).

Understand please that not all versions of the Old Testament agree as to the time frame. I decline to note the exact differences to lessen confusion. Most modern versions are based on the Masoretic Text.