Contradiction with Genesis 37:33
Genesis 45:27 claims Jacob's spirit revived upon hearing Joseph was alive, which contradicts his earlier belief that Joseph was dead based on the evidence of the bloody coat in Genesis 37:33.
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 37:35
Jacob refused to be comforted after Joseph's supposed death, contrasting with Genesis 45:27 where he is revived upon hearing Joseph is alive.
Genesis 37:35: And all his sons and all his daughters rose up to comfort him; but he refused to be comforted; and he said, For I will go down into the grave unto my son mourning. Thus his father wept for him.
Contradiction with Genesis 42:36
Jacob claims all things are against him when he believes Joseph is dead, which is contradictory to the comfort and revival described in Genesis 45:27.
Genesis 42:36: And Jacob their father said unto them, Me have ye bereaved [of my children]: Joseph [is] not, and Simeon [is] not, and ye will take Benjamin [away]: all these things are against me.