'I Will Be Your God' in the Bible

but this thing I commanded them, saying, Hearken unto my voice, and I will be your God, and ye shall be my people; and walk ye in all the way that I command you, that it may be well with you.

which I commanded your fathers in the day that I brought them forth out of the land of Egypt, out of the iron furnace, saying, Obey my voice, and do them, according to all which I command you: so shall ye be my people, and I will be your God;

And ye shall be my people, and I will be your God.