Deuteronomy 17:17-19 The Voice (VOICE)
17 This king must not have many wives. If he takes foreign wives in marriage alliances, they could turn his heart away from the Lord and lead him to worship foreign gods. And the king must not accumulate great quantities of silver and gold for himself.
18 As soon as this king takes the royal throne, he must write out a copy of this law for himself on a scroll with the Levitical priests looking on. 19 He must keep this copy with him and read it every day, so that he will learn to fear the Eternal his God and to obey everything in the law and remember all these regulations very carefully in order to do them.