Exodus 6:23-30 WBT

23 And Aaron took him Elisheba daughter of Amminadab, sister of Naashon, for a wife; and she bore him Nadab and Abihu, Eleazar and Ithamar.
24 And the sons of Korah; Assir, and Elkanah, and Abiasaph: these [are] the families of the Korhites.
25 And Eleazar, Aaron's son, took him [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.
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 who spoke to Pharaoh, king of Egypt, to bring out the children of Israel from Egypt: these [are] that Moses and Aaron.
28 And it came to pass, on the day [when] the LORD spoke to Moses in the land of Egypt,
29 That the LORD spoke to Moses, saying, I [am] the LORD: speak thou to Pharaoh, king of Egypt, all that I say to thee.
30 And Moses said before the LORD, Behold, I [am] of uncircumcised lips, and how shall Pharaoh hearken to me?