Contradiction with Genesis 8:3
Describes the floodwaters receding after 150 days, contradicting the immediate result implied in Genesis 7:10.
Genesis 8:3: And the waters returned from off the earth continually: and after the end of the hundred and fifty days the waters were abated. [continually: Heb. in going and returning]
Contradiction with Genesis 7:12
States it rained for 40 days and nights, implying an extended timeframe which may seem at odds with the brief timeline suggested in Genesis 7:10.
Genesis 7:12: And the rain was upon the earth forty days and forty nights.
Contradiction with Genesis 7:17
Specifies the flood lasted 40 days, contrasting with the perception of completion in Genesis 7:10 after seven days.
Genesis 7:17: And the flood was forty days upon the earth; and the waters increased, and bare up the ark, and it was lift up above the earth.