A table given by Scheuchzer, extracted from the Memoires de Trevoux,
gives the following general view: The twelve sons of JACOB with their
children and grandchildren.
Reuben and his four sons 5
Simeon and his six sons 7
Levi and his three sons 4
Judah and his seven sons and grandsons 8
Issachar and his four sons 5
Zebulun and his three sons 4
Total sons of JACOB and LEAH 33
Gad and his seven sons 8
Asher and his seven sons and grandsons 8
Total sons of JACOB and ZILPAH 16
Joseph and his two sons 3
Benjamin and his ten sons 11
Total sons of JACOB and RACHEL 14
Dan and his son 2
Naphtali and his four sons 5
Total sons of JACOB and BILHAH 7
Total sons of Jacob and his four wives 70
“To harmonize this with the Septuagint and St. Stephen, <440714>Acts
7:14, to the number sixty-six (all the souls that came out of Jacob’s
loins, <014626>Genesis 46:26) add nine of the patriarchs’ wives, Judah’s
wife being already dead in Canaan, (<013812>Genesis 38:12,) Benjamin
being supposed to be as yet unmarried, and the wife of Joseph
being already in Egypt, and therefore out of the case: the number
will amount to seventy-five, which is that found in the
Acts.”-Universal History.

Dr. Hales’ method is more simple, and I think more satisfactory: “Moses
states that all the souls that came with Jacob into Egypt which issued
from his loins, (except his sons wives,) were sixty-six souls, <014626>Genesis
46:26; and this number is thus collected:
JACOB’S children, eleven sons and one daughter 12
Reuben’s sons 4
Simeon’s sons 6
Levi’s sons 3
Judah’s three sons and two grandsons 5
Issachar’s sons 4
Zebulun’s sons 3
Gad’s sons 7
Asher’s four sons, one daughter, and two grandsons 7
Dan’s son 1
Naphtali’s sons 4
Benjamin’s sons 10
66
“If to these sixty-six children, and grandchildren, and great
grandchildren, we add Jacob himself, Joseph and his two sons, the
amount is seventy, the whole amount of Jacob’s family which
settled in Egypt.
“In this statement the wives of Jacob’s sons, who formed part of
the household, are omitted; but they amounted to nine, for of the
twelve wives of the twelve sons of Jacob, Judah’s wife was dead,
<013812>Genesis 38:12, and Simeon’s also, as we may collect from his
youngest son Shaul by a Canannitess, <014610>Genesis 46:10, and
Joseph’s wife was already in Egypt. These nine wives, therefore,
added to the sixty-six, give seventy-five souls the whole amount of
Jacob’s household that went down with him to Egypt; critically
corresponding with the statement in the New Testament, that
‘Joseph sent for his father Jacob and all his kindred, amounting to
seventy-five souls.’ The expression all his kindred, including the
wives which were Joseph’s kindred, not only by affinity, but also
by consanguinity, being probably of the families of Esau, Ishmael,
or Keturah. Thus does the New Testament furnish an admirable
comment on the Old.”-Analysis, vol. ii., p. 159.

It is necessary to observe that this statement, which appears on the whole
the most consistent, supposes that Judah was married when about
fourteen years of age, his son Er at the same age, Pharez at the same,
Asher and his fourth son Beriah under twenty, Benjamin about fifteen, and
Joseph’s sons and grandsons about twenty. But this is not improbable, as
the children of Israel must all have married at a very early age, to have
produced in about two hundred and fifteen years no less than six hundred
thousand persons above twenty years old, besides women and children.