Deuteronomy 17:19-20

Young's Literal Translation

¹⁹ and it hath been with him, and he hath read in it all days of his life, so that he doth learn to fear Jehovah his God, to keep all the words of this law, and these statutes, to do them;

²⁰ so that his heart is not high above his brethren, and so as not to turn aside from the command, right or left, so that he prolongeth days over his kingdom, he and his sons, in the midst of Israel.