The Holy Ghost is particular in several parts of his sacred word, to mention by name the heads of the twelve tribes of Israel: and the precise number of souls arising from that stock, which went down into Egypt. Revelation 21:2; Genesis 46:27.
Related Commentaries of Exodus 1:1
Exodus 1:1-5
1 Now these are the names of the children of Israel, which came into Egypt; every man and his household came with Jacob.
2 Reuben, Simeon, Levi, and Judah,
3 Issachar, Zebulun, and Benjamin,
4 Dan, and Naphtali, Gad, and Asher.
5 And all the souls that came out of the loinsa of Jacob were seventy souls: for Joseph was in Egypt already.