Exodus 6:7-8
Exodus 6:7-8 ASV
and I will take you to me for a people, and I will be to you a God; and ye shall know that I am Jehovah your God, who bringeth you out from under the burdens of the Egyptians. And I will bring you in unto the land which I sware to give to Abraham, to Isaac, and to Jacob; and I will give it you for a heritage: I am Jehovah.