And it shall be, when he sitteth upon the throne of his kingdom, that he shall write him a copy of this law in a book out of that which is before the priests the Levites: (Deuteronomy 17:18)
Literally, “write himself a duplicate.” One great distinction that was to mark the ruler of Israel was his singlehearted devotion to the divine precepts (see Joshua 8:32). Making such a “copy” would demonstrate his faith in the inspired Word, and his determination to be guided by it. This would strengthen the people’s confidence that their earthly king was humbly in submission to the King of kings.