Deuter­­onomy 17:14-20

When you have come into the land which the LORD your God gives you and possess it and dwell there and then say, “I will set a king over me just like all the nations that are around me,” you must set a king over you whom the LORD your God will choose. You must select a king over you who is from among your brothers. You may not select a foreigner over you who is not your countryman. What is more, he shall not accumulate horses for himself or cause the people to return to Egypt in order that he accumulate horses, for as the LORD has said to you, “You must not go back that way ever again.” He shall not acquire many wives for himself, lest his heart turn away; nor shall he acquire for himself excess silver and gold. It must be, when he sits on the throne of his kingdom, that he shall write a copy of this law for himself on a scroll before the priests, the Levites. It must be with him, and he must read it all the days of his life so that he may learn to fear the LORD his God, and carefully observe all the words of this law and these statutes, and do them, that his heart will not be lifted up above his brothers and so that he may not turn aside from the commandment, to the right or to the left, to the end, so that he may prolong his days in his kingdom, he and his children, in the midst of Israel.