Moses
Deuteronomy 5:23BSB·traditional attribution

And when you heard the voice out of the darkness while the mountain was blazing with fire, all the heads of your tribes and your elders approached me,

John Calvin Reformed @genevareformer

23. And it came to pass, when ye heard. Lest the Israelites should undervalue his teaching, because he had been put between them by God as their minister, Moses meets the objection, (by reminding them) that it was done at their petition and request.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. Moses reminds them of the agreement of both the parties that were now treating, in the mediation of Moses. 1. Here is the consternation that the people were put into by that extreme terror with which the law was given.

Commenting on Deuteronomy 5:23-33

John Gill Reformed Baptist @doctorgill

For who is there of all flesh,.... What man was there in any age, that was ever heard of or can be named: that hath heard the voice of the living God; who lives in and of himself, and is the author and giver of life to all his creatures, whereby he is distinguished from and is opposed unto the lifeless deities of the Gentiles...