Exodus 6:3

1 And the Lord said to Moses, Now you will see what I am about to do to Pharaoh; for by a strong hand he will be forced to let them go, driving them out of his land because of my outstretched arm.

2 And God said to Moses, I am Yahweh:

3 I let myself be seen by Abraham, Isaac, and Jacob, as God, the Ruler of all; but they had no knowledge of my name Yahweh.

4 And I made an agreement with them, to give them the land of Canaan, the land of their wanderings.

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.