Flavius Josephus, Antiquities of the Jews
William Whiston, A.M., Ed.

[176] Jacob, encouraged by this dream, went on more cheerfully for Egypt with his sons, and all belonging to them. Now they were in all seventy. I once, indeed, thought it best not to set down the names of this family, especially because of their difficult pronunciation [by the Greeks]; but, upon the whole, I think it necessary to mention those names, that I may disprove such as believe that we came not originally from Mesopotamia, but are Egyptians. Now Jacob had twelve sons; of these Joseph was come thither before. We will therefore set down the names of Jacob's children and grandchildren. Reuben had four sons - Anoch, Phallu, Assaron, Charmi. Simeon had six - Jamuel, Jamin, Avod, Jachin, Soar, Saul. Levi had three sons - Gersom, Caath, Merari. Judas had three sons - Sala, Phares, Zerah; and by Phares two grandchildren, Esrom and Amar. Issachar had four sons - Thola, Phua, Jasob, Samaron. Zabulon had with him three sons - Sarad, Helon, Jalel. So far is the posterity of Lea; with whom went her daughter Dinah. These are thirty-three. Rachel had two sons, the one of whom, Joseph, had two sons also, Manasses and Ephraim. The other, Benjamin, had ten sons - Bolau, Bacchar, Asabel, Geras, Naaman, Jes, Ros, Momphis, Opphis, Arad. These fourteen added to the thirty-three before enumerated, amount to the number forty-seven. And this was the legitimate posterity of Jacob. He had besides by Bilhah, the handmaid of Rachel, Dan and Nephtliali; which last had four sons that followed him - Jesel, Guni, Issari, and Sellim. Dan had an only begotten son, Usi. If these be added to those before mentioned, they complete the number fifty-four. Gad and Aser were the sons of Zilpha, who was the handmaid of Lea. These had with them, Gad seven - Saphoniah, Augis, Sunis, Azabon, Aerin, Erocd, Ariel. Aser had a daughter, Sarah, and six male children, whose names were Jomne, Isus, Isoui, Baris, Abar and Melchiel. If we add these, which are sixteen, to the fifty-four, the forementioned number [70] is completed ¹ Jacob not being himself included in that number.