Contradiction with Genesis 37:33
It contradicts Genesis 45:12 where Joseph reveals himself, previously in Genesis 37:33, Jacob believed Joseph was dead, showing a misunderstanding or lack of recognition compared to the revelation in Genesis 45:12.
Genesis 37:33: And he knew it, and said, [It is] my son's coat; an evil beast hath devoured him; Joseph is without doubt rent in pieces.
Contradiction with Genesis 42:8
Contradicts Genesis 45:12 where Joseph reveals himself to his brothers, in Genesis 42:8, his brothers did not recognize him.
Genesis 42:8: And Joseph knew his brethren, but they knew not him.
Contradiction with Genesis 50:20
Contradicts the immediate acceptance in Genesis 45:12, as Genesis 50:20 reflects on the brothers' intentions being harmful, whereas Joseph's revelation was meant to assure them.
Genesis 50:20: But as for you, ye thought evil against me; [but] God meant it unto good, to bring to pass, as [it is] this day, to save much people alive.