Exodus 6:7

6:7 I will take you to myself for a people, and I will be your God. Then you will know that I am the Lord your God, who brought you out from your enslavement to the Egyptians.

Exodus 29:46

29:46 and they will know that I am the Lord their God, who brought them out from the land of Egypt, so that I may reside among them. I am the Lord their God.