Deuteronomy 17:15-17

King James Version

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.

¹⁶ But he shall not multiply horses to himself, nor cause the people to return to Egypt, to the end that he should multiply horses: forasmuch as the Lord hath said unto you, Ye shall henceforth return no more that way.

¹⁷ Neither shall he multiply wives to himself, that his heart turn not away: neither shall he greatly multiply to himself silver and gold.