Numbers 3:13

3:13 because all the firstborn are mine. When I destroyed all the firstborn in the land of Egypt, I set apart for myself all the firstborn in Israel, both man and beast. They belong to me. I am the Lord.”

Numbers 15:15

15:15 One statute must apply to you who belong to the congregation and to the resident foreigner who is living among you, as a permanent statute for your future generations. You and the resident foreigner will be alike before the Lord.