Deuteronomy 17:14; Deuteronomy 17:18

14 When you are come to the land which Yahweh your God gives you, and shall possess it, and shall dwell therein, and shall say, I will set a king over me, like all the nations that are round about me;

18 It shall be, when he sits on 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: