15 So see that you make no agreement with the people of the land, and do not go after their gods, or take part in their offerings, or be guests at their feasts, 16 Or take their daughters for your sons; for when their daughters give worship before their gods, they will make your sons take part with them.
Matthew Henry's Commentary on Exodus 34:15-16
Commentary on Exodus 34:10-17
(Read Exodus 34:10-17)
The Israelites are commanded to destroy every monument of idolatry, however curious or costly; to refuse all alliance, friendship, or marriage with idolaters, and all idolatrous feasts; and they were reminded not with idolaters, and all idolatrous feats; and they were reminded not to repeat the crime of making molten images. Jealously is called the rage of a man, Proverbs 6:34; but in God it is holy and just displeasure. Those cannot worship God aright, who do not worship him only.