Deuteronomy 17:14; Deuteronomy 17:15

14 "When you enter the land which the LORD your God gives you, and you possess it and live in it, and you say, 'I will set a king over me like all the nations who are around me,'

15 you shall surely set a king over you whom the LORD your God chooses, one from among your countrymen you shall set as king over yourselves; you may not put a foreigner over yourselves who is not your countryman.