Matthew Henry Commentary Exodus 34:10-17

"And he said, Behold, I make a covenant: before all thy people I will do marvels, such as have not been wrought in all the earth, nor in any nation; and all the people among which thou art shall see the work of Jehovah; for it is a terrible thing that I do with thee. Observe thou that which I command thee this day: behold, I drive out before thee the Amorite, and the Canaanite, and the Hittite, and the Perizzite, and the Hivite, and the Jebusite. Take heed to thyself, lest thou make a covenant with the inhabitants of the land whither thou goest, lest it be for a snare in the midst of thee: but ye shall break down their altars, and dash in pieces their pillars, and ye shall cut down their Asherim; for thou shalt worship no other god: for Jehovah, whose name is Jealous, is a jealous God: lest thou make a covenant with the inhabitants of the land, and they play the harlot after their gods, and sacrifice unto their gods, and one call thee and thou eat of his sacrifice; and thou take of their daughters unto thy sons, and their daughters play the harlot after their gods, and make thy sons play the harlot after their gods. Thou shalt make thee no molten gods." — Exodus 34:10-17 (ASV)

The Israelites are commanded to destroy every monument of idolatry, however intricate or costly. They must also refuse all alliance, friendship, or marriage with idolaters, and all idolatrous feasts.

They were also reminded to maintain no association with idolaters and to avoid all idolatrous feasts. Furthermore, they were reminded not to repeat the crime of making molten images.

Jealousy is called the rage of a man (Proverbs 6:34), but in God, it is holy and just displeasure. Those cannot worship God rightly who do not worship Him only.