Contradiction with Genesis 6:3
This verse states man's days shall be 120 years, contradicting Job 42:17 implying Job lived longer.
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 Psalm 90:10
This verse states the lifespan of man is 70 to 80 years, contrasting with Job 42:17 where Job lived 140 years after his trials.
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]
Contradiction with Ecclesiastes 3:2
This states there is a time to be born and a time to die, implying a fixed lifespan, which contradicts the exceptionally long lifespan given to Job in Job 42:17.
Ecclesiastes 3:2: A time to be born, and a time to die; a time to plant, and a time to pluck up [that which is] planted; [to be...: Heb. to bear]