"Now it shall come about when he sits on the throne of his kingdom, he shall write for himself a copy of this law on a scroll in the presence of the Levitical priests." (Deuteronomy 17:18) The literal commandment is that the king of Israel should write for himself a copy of the law on a scroll in the presence of the Levitical priests.

"you shall surely set a king over you whom the LORD your God chooses, one from among your countrymen you shall set as king over yourselves; you may not put a foreigner over yourselves who is not your countryman." (Deuteronomy 17:15)

"you shall surely set a king over you whom the LORD your God chooses, one from among your countrymen you shall set as king over yourselves; you may not put a foreigner over yourselves who is not your countryman." (Deuteronomy 17:15)

"He shall not multiply wives for himself, or else his heart will turn away; nor shall he greatly increase silver and gold for himself." (Deuteronomy 17:17)

"Moreover, he shall not multiply horses for himself, nor shall he cause the people to return to Egypt to multiply horses, since the LORD has said to you, 'You shall never again return that way.'" (Deuteronomy 17:16)

"He shall not multiply wives for himself, or else his heart will turn away; nor shall he greatly increase silver and gold for himself." (Deuteronomy 17:17)

"Moreover, he shall not multiply horses for himself, nor shall he cause the people to return to Egypt to multiply horses, since the LORD has said to you, 'You shall never again return that way.'" (Deuteronomy 17:16)