And it shall be, when the king sits on his throne of kingship, that he shall write for himself a copy of this Torah before the Levites and the Priests. Maimonides writes that the king's Torah was unique since it was to be checked against the Torah that was kept in the Temple. A hint to this law, explains Ha'amek Davar, is our verse that insists the king write his Torah "before the Levites and the Priests," who work in the Temple. Thus, not only did the king have to write an additional Torah, but his Torah also had to be written with an extra measure of supervision.