Exodus 6:8

5 And truly my ears are open to the cry of the children of Israel whom the Egyptians keep under their yoke; and I have kept in mind my agreement.

6 Say then to the children of Israel, I am Yahweh, and I will take you out from under the yoke of the Egyptians, and make you safe from their power, and will make you free by the strength of my arm after great punishments.

7 And I will take you to be my people and I will be your God; and you will be certain that I am the Lord your God, who takes you out from under the yoke of the Egyptians.

8 And I will be your guide into the land which I made an oath to give to Abraham, to Isaac, and to Jacob; and I will give it to you for your heritage: I am Yahweh.

9 And Moses said these words to the children of Israel, but they gave no attention to him, because of the grief of their spirit and the cruel weight of their work.

10 And the Lord said to Moses,

11 Go in and say to Pharaoh, king of Egypt, that he is to let the children of Israel go out of his land.