Exodus 6:12-30

12And Moses spoke before the LORD, saying, Behold, the children of Israel have not hearkened to me; how then shall Pharaoh hear me, who am of uncircumcised lips? 13And the LORD spoke to Moses and to Aaron, and gave them a charge to the children of Israel, and to Pharaoh king of Egypt, to bring the children of Israel out of the land of Egypt.

14These are the heads of their father’s houses: The sons of Reuben the firstborn of Israel; Hanoch, and Pallu, Hezron, and Carmi: these are the families of Reuben. 15And the sons of Simeon; Jemuel, and Jamin, and Ohad, and Jachin, and Zohar, and Shaul the son of a Canaanitish woman: these are the families of Simeon. 16And these are the names of the sons of Levi according to their generations; Gershon, and Kohath, and Merari: and the years of the life of Levi were an hundred and thirty and seven years. 17The sons of Gershon; Libni, and Shimi, according to their families. 18And the sons of Kohath; Amram, and Izhar, and Hebron, and Uzziel: and the years of the life of Kohath were an hundred and thirty and three years. 19And the sons of Merari; Mahali and Mushi: these are the families of Levi according to their generations. 20And Amram took him Jochebed his father’s sister for a wife; and she bore him Aaron and Moses: and the years of the life of Amram were an hundred and thirty and seven years. 21And the sons of Izhar; Korah, and Nepheg, and Zichri. 22And the sons of Uzziel; Mishael, and Elzaphan, and Zithri. 23And Aaron took Elisheba, daughter of Amminadab, sister of Naashon, for a wife; and she bore him Nadab, and Abihu, Eleazar, and Ithamar. 24And the sons of Korah; Assir, and Elkanah, and Abiasaph: these are the families of the Korhites. 25And Eleazar Aaron’s son took one of the daughters of Putiel for a wife; and she bore to him Phinehas: these are the heads of the fathers of the Levites according to their families. 26These 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. 27These are they who spoke to Pharaoh king of Egypt, to bring out the children of Israel from Egypt: these are that Moses and Aaron. 28And it came to pass on the day when the LORD spoke to Moses in the land of Egypt, 29That the LORD spoke to Moses, saying, I am the LORD: speak thou to Pharaoh king of Egypt all that I say to thee. 30And Moses said before the LORD, Behold, I am of uncircumcised lips, and how shall Pharaoh hearken to me?