Exodus 34:16

“And thou take of their daughters unto thy sons, etc.] That is, marry them to them, which explains what is meant by making a covenant with them, entering into such a near relation, and joining families, and thus intermixing with one another; and their daughters go a whoring after their gods; the worship of whom they have been trained up in from their infancy, and therefore hanker after them, and commit whoredom in a spiritual sense with them; and make thy sons go a whoring after their gods; by the means of tempting and drawing them into idolatrous practices, as the wives of Solomon were a snare to him.”

“The precepts contained in these verses are, for the most part, identical in substance with some of those which follow the Ten Commandments and are recorded in “the Book of the covenant” (Exo. 20–23; see Exodus 24:7). Exodus 34:13 Cut down their groves - This is the first reference to what is commonly known as grove-worship. The original word for “grove” in this connection אשׁרה 'ăshêrāh is different from that so rendered in Genesis 21:33. Our translators supposed that what the law commands is the destruction of groves dedicated to the worship of false deities Judges 6:25; 2 Kings 18:4; but inasmuch as the worship of asherah is found associated with that of Astarte, or Ashtoreth Judges…”

“34:16 Intermarriage with pagans was a problem throughout the Old Testament (see Gen 24:3; Ezra 9:1-2; cp. 2 Cor 6:14-18).”

“Num 25:1, Num 25:2; Deu 7:3, Deu 7:4; Kg1 11:2-4; Ezr 9:2; Neh 13:23, Neh 13:25; Co2 6:14-17 Exodus 34:17”