Moses
Deuteronomy 9:17ESV·traditional attribution

So I took hold of the two tablets and threw them out of my two hands and broke them before your eyes.

John Calvin Reformed @genevareformer

17. And I took the two tables, and cast them out Moses here accuses himself of no transgression; he does not, therefore, give us to understand that he was urged to break the tables by the impetuosity of excessive anger; but rather he again repeats what they had deserved, and consequently that he discharged the office of a herald, Lat.

Matthew Henry Presbyterian @wholebiblehenry

That they might have no pretence to think that God brought them to Canaan for their righteousness, Moses here shows them what a miracle of mercy it was that they had not long ere this been destroyed in the wilderness: "Remember, and forget not, how thou provokedst the Lord thy God (Deu 9:7); so far from purchasing his favour, thou hast many a time laid...

Commenting on Deuteronomy 9:7-29

John Gill Reformed Baptist @doctorgill

And I took the two tables, and cast them out of my two hands,.... In wrath and indignation at the sin they were guilty of: and brake them before your eyes; as an emblem of their breach of them by transgressing them.