Contradiction with Genesis 6:3
Limits human lifespan to 120 years, whereas Genesis 5:31 describes Lamach living 777 years.
Genesis 6:3: 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.
Contradiction with Genesis 11:10-11
Describes Shem living 600 years, which contradicts the limit on lifespan stated in Genesis 6:3 following Genesis 5:31 where people lived much longer.
Genesis 11:10-11: These [are] the generations of Shem: Shem [was] an hundred years old, and begat Arphaxad two years after the flood:
Contradiction with Psalm 90:10
States that the days of human life are seventy years, in contrast to the lengthy lifespan of 777 years described in Genesis 5:31.
Psalm 90:10: 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. [The days...: Heb. As for the days of our years, in them are seventy years]