Judges 3:6

and they took their daughters to be their wives, and gave their own daughters to their sons and served their gods.

Exodus 34:16

and you take of their daughters to your sons, and their daughters play the prostitute after their gods, and make your sons play the prostitute after their gods.

Deuteronomy 7:3-4

neither shall you make marriages with them; your daughter you shall not give to his son, nor shall you take his daughter for your son.

1 Kings 11:1-5

Now king Solomon loved many foreign women, together with the daughter of Pharaoh, women of the Moabites, Ammonites, Edomites, Sidonians, and Hittites;

Ezra 9:11-12

which you have commanded by your servants the prophets, saying, 'The land, to which you go to possess it, is an unclean land through the uncleanness of the peoples of the lands, through their abominations, which have filled it from one end to another with their filthiness.

Nehemiah 13:23-27

In those days also saw I the Jews who had married women of Ashdod, of Ammon, [and] of Moab:

Ezekiel 16:3

and say, Thus says the Lord Yahweh to Jerusalem: Your birth and your birth is of the land of the Canaanite; the Amorite was your father, and your mother was a Hittite.

Treasury of Scripture Knowledge

Summary

And they took their daughters to be their wives, and gave their daughters to their sons, and served their gods.

Bible References

General references

Exodus 34:16
and you take of their daughters to your sons, and their daughters play the prostitute after their gods, and make your sons play the prostitute after their gods.
Deuteronomy 7:3
neither shall you make marriages with them; your daughter you shall not give to his son, nor shall you take his daughter for your son.
1 Kings 11:1
Now king Solomon loved many foreign women, together with the daughter of Pharaoh, women of the Moabites, Ammonites, Edomites, Sidonians, and Hittites;
Ezra 9:11
which you have commanded by your servants the prophets, saying, 'The land, to which you go to possess it, is an unclean land through the uncleanness of the peoples of the lands, through their abominations, which have filled it from one end to another with their filthiness.
Nehemiah 13:23
In those days also saw I the Jews who had married women of Ashdod, of Ammon, [and] of Moab:
Ezekiel 16:3
and say, Thus says the Lord Yahweh to Jerusalem: Your birth and your birth is of the land of the Canaanite; the Amorite was your father, and your mother was a Hittite.