Musar zu Schemot 6:26

There is, however, another aspect to that statement in the Torah. The explanation I propose will also answer the question of why the Torah had to write in 6,26: הוא אהרון ומשה אשר אמר ה' להם הוציאו את בני ישראל מארץ מצרים על צבאותם. "This is Aaron and Moses to whom G–d said: 'Take the children of Israel out of the land of Egypt with their armies.'" In the very sentence following, the Torah reverses the order and refers to: הוא משה ואהרון. What is the reason for this reversal in view of the fact that both Moses and Aaron are described as speaking to Pharaoh and demanding that he release the children of Israel? It appears that the Torah makes a point of showing that Moses and Aaron were of equal stature. How do we reconcile this with one of the thirteen Articles of Faith postulated by Maimonides that no prophet ever matched Moses? Why was Aaron given precedence in the first of the two verses ?