26 These are Aaron and Moses, whom the Lord commanded to bring forth the children of Israel out of the land of Egypt by their companies.
27 These are they that speak to Pharao king of Egypt, in order to bring out the children of Israel from Egypt: these are that Moses and Aaron
28 In the day when the Lord spoke to Moses in the land of Egypt.
29 And the Lord spoke to Moses, saying: I am the Lord: speak thou to Pharao king of Egypt all that I say to thee.
30 And Moses said before the Lord: Lo I am of uncircumcised lips, how will Pharao hear me?