This emphatic repetition shows the reason for inserting the genealogy. The names of Moses and Aaron are given twice and in a different order; used in Exodus 6:26 probably to mark Aaron as the older in the genealogy, and used in Exodus 6:27 to denote the leadership of Moses.

According to their armies - צבאתם tsibotham, their battalions - regularly arranged troops. As God had these particularly under his care and direction, he had the name of יהוה צבאות Yehovah tsebaoth, Lord of hosts or armies. "The plain and disinterested manner," says Dr. Dodd, "in which Moses speaks here of his relations, and the impartiality wherewith he inserts in the list of them such as were afterwards severely punished by the Lord, are striking proofs of his modesty and sincerity. He inserts the genealogy of Reuben and Simeon, because they were of the same mother with Levi; and though he says nothing of himself, yet he relates particularly what concerns Aaron, Exodus 6:23, who married into an honorable family, the sister of a prince of the tribe of Judah."

These are that Aaron and Moses,.... Aaron is set before Moses, because he was the eldest, and because he prophesied in Egypt before Moses, as Aben Ezra observes; though Moses was greater in dignity than he, and therefore the true reason may be the modesty of Moses; though in a following verse Moses is set before Aaron, to show that they were equal, as Jarchi thinks; and perhaps the thing was quite an indifference to the historian, and done without any care and intention, however these words are emphatically expressed, on purpose to point out the persons to future ages:

to whom the Lord said, bring out the children of Israel from the land of Egypt: which is the charge he gave them both, Exodus 6:13, and the account of which is returned to again, after an interruption by the genealogy before recorded: Israel were to be brought out:

according to their armies; denoting their numbers, and the order in which they were to march out of Egypt, as they did, not by flight, nor in confusion, but in a formidable manner, and in great composure and order, with these two men, Moses and Aaron, as their generals at the head of them.

These are that Aaron and Moses, to whom the LORD said, Bring out the children of Israel from the land of Egypt according to their {k} armies.

(k) For their families were so great, that they might be compared to armies.

6:26 According to their armies - Like numerous armies, in military order, and with great power. In the close of the chapter , he returns to his narrative, from which he had broken off somewhat abruptly ver.13, and repeats, the charge God had given him to deliver his message to Pharaoh, ver.29.

6:14-30 Moses and Aaron were Israelites; raised up unto them of their brethren, as Christ also should be, who was to be the Prophet and Priest, the Redeemer and Lawgiver of the people of Israel. Moses returns to his narrative, and repeats the charge God had given him to deliver his message to Pharaoh, and his objection against it. Those who have spoken unadvisedly with their lips ought to reflect upon it with regret, as Moses seems to do here.Uncircumcised, is used in Scripture to note the unsuitableness there may be in any thing to answer its proper purpose; as the carnal heart and depraved nature of fallen man are wholly unsuited to the services of God, and to the purposes of his glory. It is profitable to place no confidence in ourselves, all our sufficiency must be in the Lord. We never can trust ourselves too little, or our God too much. I can do nothing by myself, said the apostle, but I can do all things through Christ which strengtheneth me.