Moses
Deuteronomy 17:18ESV·traditional attribution

“And when he sits on the throne of his kingdom, he shall write for himself in a book a copy of this law, approved by the Levitical priests.

John Calvin Reformed @genevareformer

18. And it shall be, when he sitteth upon the throne. It would not be enough to correct their errors unless kings were also instructed in the fear of God, and properly taught their duty; now, therefore, a system of discipline is added, whereby it was profitable for them to be grounded in the study of religion and justice, viz., that they should take the...

Matthew Henry Presbyterian @wholebiblehenry

After the laws which concerned subjects fitly followed the laws which concern kings; for those that rule others must themselves remember that they are under command. Here are laws given, I. To the electors of the empire, what rules they must go by in making their choice, Deu 17:14, Deu 17:15. 1.

Commenting on Deuteronomy 17:14-20

John Gill Reformed Baptist @doctorgill

And it shall be, when he sitteth upon the throne of his kingdom,.... When he is settled on it, and is even amidst all the pomp and glory of it: that he shall write him a copy of this law in a book; which copy the Septuagint and Vulgate Latin versions interpret of this book of Deuteronomy, which is a summary abstract and repetition of...