Exodus 6:16

“And these are the names of the sons of Levi, according to their generations, etc.] Whose sons, according to the order of their birth, were as follow: Gershom, and Kohath, and Merari; (see <014611>Genesis 46:11): and the years of the life of Levi were one hundred and thirty seven years; and exactly the same number of years is assigned him by Polyhistor from Demetrius f176, an Heathen writer. Jarchi says, that the reason why, the years of the life of Levi are reckoned is to show how long the bondage lasted; for there was no servitude as long as any of the tribes (or of the sons of Jacob) remained, according to (<020106>Exodus 1:6,8) and the Jewish chronologers f177 affirm that Levi was the…”

“The age of Levi, Kohath, and Amram, the father, grandfather, and great grandfather of Moses is here recorded; and they all lived to a great age, Levi to one hundred thirty seven, Kohath to one hundred thirty three, and Amram to one hundred thirty seven: Moses himself came much short of them, and fixed seventy or eighty for the ordinary stretch of human life. Psa 90:10. For now Israel was multiplied, and become a great nation, and divine revelation was by the hand of Moses committed to writing, and no longer trusted to tradition; the two great reasons for the long lives of the patriarchs were ceased, and therefore from henceforward fewer years must serve men. Exodus 6:20”

“6:16-20 This genealogy of Levi’s descendants focuses on Aaron and Moses; four generations are given in the genealogy from Levi to Aaron and Moses (cp. Gen 15:16). Since the people of Israel had lived in Egypt for 430 years (see Exod 12:40-41; Gen 15:13), this genealogy skips numerous generations. In Gen 46:11, Gershon, Kohath, and Merari are listed as the actual sons of Levi who moved down to Egypt with their father and the rest of Jacob’s family. Amram’s wife, Jochebed, gave birth to his sons (Exod 6:20). This is very concrete language, so there is no reason to believe that there were unnamed generations between Amram and Aaron and Moses. This suggests that the unnamed generations were…”

“sons: Gen 46:11; Num 3:17; Ch1 6:1, Ch1 6:16 Kohath: Num 26:57; Ch1 23:6 an hundred: Exo 6:18, Exo 6:20; Gen 35:28, Gen 47:28, Gen 50:26 Exodus 6:17”