It was this Aaron and Moses to whom the Lord said, “Bring the Israelites out of Egypt by their divisions.” 27 They were the ones who spoke to Pharaoh king of Egypt about bringing the Israelites out of Egypt—this same Moses and Aaron. (26,27).
The genealogy focuses attention on the family of Levi, to which Moses and Aaron belonged.
To my mind, one of the things it does is to locate them in the realm of time and space. They were real, Jewish, flesh and blood human-beings. They were not super-heroes who had come into contact with kryptonite. They were not ‘Marvel’ comic characters – fantastic works of fiction. They were ordinary people, and it was “this Aaron and Moses”, frail and fallible as they were, whoGod used so significantly. Surely, then, we can have hope and take heart? It was “this…Moses” who was such a mighty instrument of God – the same Moses who was prone to make excuses, and look for ways out of his assignment (30).
Also, consider this point made by Tom Hale:
‘Because Moses and Aaron were the ones chosen by God to bring the Israelites out of Egypt, it was important to document their family record, or genealogy. Only the first three sons of Jacob are mentioned; Moses and Aaron were descended from the third son, Levi.
Notice once more that Moses did not have the credentials of a firstborn son. Furthermore, he was descended from Kohath, the second son of Levi (verses 16, 18, 20). The only credentials Moses had were those God gave him; some were natural endowments and others came from Moses’ life experiences. Then God added the spiritual empowerment that would enable Moses to do God’s work. He will do the same for each of us.’ ‘Applied Old Testament Commentary’, p.217.
As someone said, ‘God does not call the qualified, but He qualifies the called.