Jasher Chapter 53 ~ 17 And Joseph said unto him, Hast thou begotten any children? and he said, Thy servant has ten sons, and these are their names, Bela, Becher, Ashbal, Gera, Naaman, Achi, Rosh, Mupim, Chupim, and Ord, and I called their names after my brother whom I have not seen.

18 And he ordered them to bring before him his map of the stars, whereby Joseph knew all the times, and Joseph said unto Benjamin, I have heard that the Hebrews are acquainted with all wisdom, dost thou know anything of this?

19 And Benjamin said, Thy servant is knowing also in all the wisdom which my father taught me, and Joseph said unto Benjamin, Look now at this instrument and understand where thy brother Joseph is in Egypt, who you said went down to Egypt.

20 And Benjamin beheld that instrument with the map of the stars of heaven, and he was wise and looked therein to know where his brother was, and Benjamin divided the whole land of Egypt into four divisions, and he found that he who was sitting upon the throne before him was his brother Joseph, and Benjamin wondered greatly, and when Joseph saw that his brother Benjamin was so much astonished, he said unto Benjamin, What hast thou seen, and why art thou astonished?

21 And Benjamin said unto Joseph, I can see by this that Joseph my brother sitteth here with me upon the throne, and Joseph said unto him, I am Joseph thy brother, reveal not this thing unto thy brethren; behold I will send thee with them when they go away, and I will command them to be brought back again into the city, and I will take thee away from them.