Exodus 34:12-16

12Take heed to thyself, lest thou make a covenant with the inhabitants of the land where thou goest, lest it be for a snare in the midst of thee: 13But ye shall destroy their altars, break their images, and cut down their groves:1 14For thou shalt worship no other god: for the LORD, whose name is Jealous, is a jealous God: 15Lest thou make a covenant with the inhabitants of the land, and they go astray after their gods, and sacrifice to their gods, and one call thee, and thou eat of his sacrifice; 16And thou take of their daughters to thy sons, and their daughters go astray after their gods, and make thy sons go astray after their gods.