John Wesley on Exodus 6:14

This genealogy ends in those two great patriots, Moses and Aaron; and comes in here to shew that they were Israelites, bone of their bone, and flesh of their flesh, whom they were sent to deliver, raised up unto them of their brethren, as Christ also should be, who was to be the prophet and priest, the Redeemer and law - giver of the house of Israel, and whose genealogy also like this was to be carefully preserved. The heads of the houses of three of the tribes are here named, agreeing with the accounts we had, Gen 46:8 - 27. Reuben and Simeon seem to be mentioned only for the sake of Levi, from whom Moses and Aaron descended, and all the priests of the Jewish church.