Deuteronomy 7:4

“They shall not live in your land, lest they make you sin against Me; for if you serve their gods, it will surely be a snare to you.”

I call heaven and earth to witness against you today, that you will surely perish quickly from the land where you are going over the Jordan to possess it. You shall not prolong your days on it, but will be utterly destroyed.

“Only in the cities of these peoples that Yahweh your God is giving you as an inheritance, you shall not leave alive anything that breathes.

so that they may not teach you to do according to all their abominations which they have done for their gods, so that you would sin against Yahweh your God.

“For if you ever turn back and cling to the rest of these nations, these which remain among you, and intermarry with them, so that you go along with them and they with you,

and as for you, you shall cut no covenant with the inhabitants of this land; you shall tear down their altars.’ But you have not listened to My voice; what is this you have done?

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

Now it happened, as though it had been a trivial thing for him to walk in the sins of Jeroboam the son of Nebat, that he took Jezebel the daughter of Ethbaal king of the Sidonians as a wife, and went and served Baal and worshiped him.

In those days I also saw that the Jews had married women from Ashdod, Ammon, and Moab.