Deuteronomy 17:15

you may indeed set a king over you whom the Lord your God will choose . One from among your brothers you shall set as king over you. You may not put a foreigner over you, who is not your brother .

be sure to appoint over you a king the Lord your God chooses. He must be from among your fellow Israelites. Do not place a foreigner over you, one who is not an Israelite.

Thou shalt in any wise set him king over thee, whom the Lord thy God shall choose : one from among thy brethren shalt thou set king over thee: thou mayest not set a stranger over thee, which is not thy brother.