Exodus 6:2-13 - God Promises Freedom
2 And God will speak to Moses, and will say to him, I am Jehovah. 3 And I shall be seen to Abraham, to Isaak, and to Jacob, by God Almighty; and my name Jehovah I was not known to them. 4 And also have I set my covenant with them to give to them the land of Canaan, the land of their sojournings, which they sojourned upon it 5 And also I heard the groaning of the sons of Israel whom the Egyptians have made to serve: and I will remember my covenant
6 For this say thou to the sons of Israel, I am Jehovah, and I brought you forth from under the burdens of the Egyptians, and I delivered you from their work, and I redeemed you with an arm stretched out and with great judgments. 7 And I took you to me for a people, and I was to you for God: and ye knew that I was Jehovah your God, having brought you forth from under the burdens of the Egyptians. 8 And I brought you to a land which I lifted up my hand to give it to Abraham, to Isaak, and to Jacob, and I gave it to you a possession: I am Jehovah. 9 And Moses spake thus to the sons of Israel: and they heard not to Moses for shortness of spirit, and from hard work.
10 And Jehovah will speak to Moses, saying, 11 Go, speak to Pharaoh king of Egypt, and he shall send forth the sons of Israel out of Egypt
12 And Moses will speak before Jehovah, saying, Behold, the sons of Israel heard not to me; and how shall Pharaoh hear me, and I of uncircumcised lips? 13 And Jehovah will speak to Moses and to Aaron and will command them to the sons of Israel, and to Pharaoh king of Egypt, to bring forth the sons of Israel out of the land of Egypt