Human longevity

According to the Bible's book of Genesis, God restricted the human lifespan to 120 years during the time of the Flood:

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And the LORD said, My spirit shall not always strive with man, for that he also is flesh: yet his days shall be an hundred and twenty years. Genesis 6:3

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According to the book of Psalms, the average human lifespan (which at the time of the writing would have been 3,000 years ago, and we know must have been at least 2,500 years ago given the Dead Sea Scrolls) was 70 years:

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The days of our years are threescore years and ten; and if by reason of strength they be fourscore years, yet is their strength labour and sorrow; for it is soon cut off, and we fly away. Psalms 90:10

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Born	Ancestor	Son Born	Age	Died	Other Children	Reference
0	Adam	130	930	930	Abel, Cain, s&d	Genesis 5
130	Seth	105	912	1042	s&d
235	Enos	90	905	1140	s&d
325	Cainan	70	910	1235	s&d
395	Mahalaleel	65	895	1290	s&d
460	Jared	162	962	1422	s&d
622	Enoch	65	365	987	s&d
687	Methuselah	187	969	1656	s&d
874	Lamech	182	777	1651	s&d
1656	FLOOD					Genesis 7:6
1056	Noah	502	950	2006	s&d	Genesis 5:32 , Genesis 9:29
1558	Shem	100	600	2158	Elam, Asshur, Lud, Aram, s&d	Genesis 11
1658	Arphaxad	35	438	2096	s&d
1693	Salah	30	433	2126	s&d
1723	Eber	34	464	2187	Joktan, s&d
1757	Peleg	30	239	2026	s&d
1787	Reu	32	239	2026	s&d
1819	Serug	30	230	2049	s&d
1849	Nahor	29	148	1997	s&d
1878	Terah	100	205	2083	Nahor, Haran
1978	Abram	100	175	2153	Ishmael, Zimram, et al.	Genesis 25 , Genesis 17:24 , Genesis 12:4
2078	Isaac	40	180	2258	Esau	Genesis 21:5 , Genesis 25:20 , Genesis 35:28
2248	EGYPT
2118	Jacob	91	147	2265	Reuben, Simeon, et al.	Genesis 30 , Genesis 35
2196	Levi		137	abt 2337		Exodus 6:16
	Kohath		133	abt 2670
	Amram		137		Aaron, Miriam
	Moses		120			Deuteronomy 34:7