when Moses was grown
2:11 when Moses was grown. Moses was forty years old at this time (Acts 7:23) and, although he had been raised from infancy in Pharaoh’s palace and in all the culture and wisdom of the mighty nation of Egypt (perhaps even being a prospective Pharaoh himself, as the “son” of Pharaoh’s daughter–Exodus 2:10), he still considered the Hebrews to be “his brethren,” and needed his protection. It seems very likely that he had, by this time, come into custody of the ancient tablets which he would later compile into the book of Genesis. Joseph had possibly deposited them in his own vaults for safekeeping.