Deuteronomy Chapter 17, Verse 15

15: 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.- edit KJV text
15: Thou shalt set him whom the Lord thy God shall choose out of the number of thy brethren. Thou mayst not make a man of another nation king, that is not thy brother.— edit Douay text
15: thou shalt surely set over thee the ruler whom the Lord God shall choose: of thy brethren thou shalt set over thee a ruler; thou shalt not have power to set over thee a stranger, because he is not thy brother.— edit LXX text