Deuteronomy 17:14-15

CAB(i) 14 And when you shall enter into the land which the Lord your God gives you, and shall inherit it and dwell in it, and shall say, I will set a ruler over me, as also the other nations round about me; 15 you shall surely set over you the ruler whom the Lord God shall choose: of your brothers you shall set over you a ruler; you shall not have power to set over you a stranger, because he is not your brother.