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.
Related Commentaries of Exodus 6:26
Exodus 6:26-27
26 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 armies.
27 These are they which spake to Pharaoh king of Egypt, to bring out the children of Israel from Egypt: these are that Moses and Aaron.