GEnerations] Families, and kindreds; not simply the children; for the descendents or posteritie of Moses are not here set downe, but of Aaron. Aaron and Moses] Aaron was the elder brother of Moses; both of them of the Tribe of Levi; though Moses were the Civill Magistrate, Exodus 18:21-22. Aaron was the Priest, whose sonnes, and not the sonnes of Moses are here set downe; because the Priesthood wen by naturall descent from Aaron, and so did not the government descend upon the sonnes of Moses; therefore Gerson mentioned vers. 17. was not Gerson, or Gershom the sonne of Moses mentioned, Chap. 2. vers. 22. but one ancienter then Moses; for he was his great uncle, as appeareth by comparison of Exo 6:16, &c. & Numbers 3:17,&c.