First of all the so-called Torah (five books allegedly written by Moses (pbuh) ) are not 'pure' or 100% truthful anymore, cos the Lord (YHVH) has said so to prophet Jeremiah (pbuh)
Jer 88 How do ye say 'We are wise, and the Law of the LORD (Torah YHVH - ) is with us'? Lo, certainly in vain hath wrought the vain pen of the scribes.
There is another version of "Genesis" and it is called the "Book Of Jasher". Although this book seems to be a secular history / tales book of Adam to Joshua. It contains a story about Abram destroying idols, a debate between Abram and his people on the foolishness of idol worshipping, the trial of Abram and the death sentence by fire.
http//www.sacred-texts.com/chr/apo/jasher/
During Joseph's age, the ruler of Egypt was not refered to as "Pharaoh"
According to the book of jasher, chapter 14, the origins of Pharaoh came from Rikayon who named "Pharaoh" by then king of Egypt named "Osiris"
27 And the king answered and said to Rikayon, Thy name shall no more be called Rikayon but Pharaoh shall be thy name, since thou didst exact a tax from the dead; and he called his name Pharaoh.
Osiris was so much loved by the people of Egypt. After his death, he become idolized thus turned to (one of) the god(s) by the egyptians.. (The pattern of idolizing honorable person (turned to god) after his/her death seems to be recurring isn't it, Osiris, Jesus and so on...)
Allah knows best
