Moses
Deuteronomy 12:3BSB·traditional attribution

Tear down their altars, smash their sacred pillars, burn up their Asherah poles, cut down the idols of their gods, and wipe out their names from every place.

Matthew Henry Presbyterian @wholebiblehenry

From those great original truths, That there is a God, and that there is but one God, arise those great fundamental laws, That that God is to be worshipped, and he only, and that therefore we are to have no other God before him: this is the first commandment, and the second is a guard upon it, or a hedge about it.

Commenting on Deuteronomy 12:1-4

John Gill Reformed Baptist @doctorgill

And you shall overthrow their altars,.... Which were of stone, as Jarchi observes; whereas the altar ordered to be made by the Lord, before the altar of burnt offering in the tabernacle was made, was of earth, Exo 20:24 these were to be demolished, lest the Israelites should be tempted to make use of them; and besides, the Lord would not have any remains of...

Jamieson-Fausset-Brown Reformed @jfbcommentary

And ye shall overthrow their altars--piles of turf or small stones. and break their pillars--Before the art of sculpture was known, the statues of idols were only rude blocks of colored stones.