Deuteronomy 17:16-18

Young's Literal Translation

¹⁶ `Only, he doth not multiply to himself horses, nor cause the people to turn back to Egypt, so as to multiply horses, seeing Jehovah hath said to you, Ye do not add to turn back in this way any more.

¹⁷ And he doth not multiply to himself wives, and his heart doth not turn aside, and silver and gold he doth not multiply to himself -- exceedingly.

¹⁸ `And it hath been, when he sitteth on the throne of his kingdom, that he hath written for himself the copy of this law, on a book, from [that] before the priests the Levites,