and they took their daughters to themselves for wives, and their own daughters they gave to their sons; and they served their gods.

and take their daughters to them for wives, and their daughters have given to their sons, and they serve their gods;

And they took as wives the daughters of these nations and gave their daughters to their sons, and became servants to their gods.

See Judges 2:2 note.

And they took their daughters - They formed matrimonial alliances with those proscribed nations, served their idols, and thus became one with them in politics and religion.

And they took (c) their daughters to be their wives, and gave their daughters to their sons, and served their gods.
(c) Contrary to God's commandment, (Deuteronomy 7:3).

And they took their daughters to be their wives, and gave their daughters to their sons,.... The Israelites intermarried with the inhabitants of the land, contrary to the express command of God, Deuteronomy 7:3; whereby they confounded their families, debased their blood, and were ensnared into idolatry, as follows: perhaps to these unlawful marriages, in their first settlement in the land of Canaan, reference is had in Ezekiel 16:3, "thy father was an Amorite and thy mother an Hittite"; an Amorite marrying a daughter of Israel, and an Israelitish man an Hittite woman:
and served their gods; this was the natural consequence of their intermarriages, which the Lord foresaw, and therefore cautioned them against them, Exodus 34:15.

Served their gods - Were drawn to idolatry by the persuasions and examples of their yoke - fellows.