Moses
Deuteronomy 4:13BSB·traditional attribution

He declared to you His covenant, which He commanded you to follow—the Ten Commandments that He wrote on two tablets of stone.

Matthew Henry Presbyterian @wholebiblehenry

This most lively and excellent discourse is so entire, and the particulars of it are so often repeated, that we must take it altogether in the exposition of it, and endeavour to digest it into proper heads, for we cannot divide it into paragraphs. I.

Commenting on Deuteronomy 4:1-40

John Gill Reformed Baptist @doctorgill

And he declared unto you his covenant,.... So the law was called, because it contained, on the part of God, things which he would have done or avoided, to which were annexed promises of long life and happiness in the land he gave them; and they, on their part, agreed to hearken to it, and obey it, Exo 24:3, which he commanded you to perform...

Geneva Bible Notes Reformed @genevanotes

And he declared unto you his covenant, which he commanded you to perform, [even] ten commandments; and he wrote them upon two tables of stone. (k) God joins this condition to his covenant.