Contradiction with Exodus 20:12
While Genesis 50:8 shows Joseph leaving to bury his father, Exodus 20:12 emphasizes honoring one's father, which Joseph is fulfilling rather than contradicting.
Exodus 20:12: Honour thy father and thy mother: that thy days may be long upon the land which the LORD thy God giveth thee.
Contradiction with Luke 9:59-60
Jesus tells someone to let the dead bury their own dead, seemingly prioritizing spiritual duties over burial customs, in contrast to Joseph's action in Genesis 50:8.
Luke 9:59-60: And he said unto another, Follow me. But he said, Lord, suffer me first to go and bury my father.