Deuteronomy 7:3

Do not take wives or husbands from among them; do not give your daughters to their sons, or take their daughters for your sons.

Exodus 34:15-16

So see that you make no agreement with the people of the land, and do not go after their gods, or take part in their offerings, or be guests at their feasts,

1 Kings 11:2

The nations of which the Lord had said to the children of Israel, You are not to take wives from them and they are not to take wives from you; or they will certainly make you go after their gods: to these Solomon was united in love.

Joshua 23:12-13

For if you go back, joining yourselves to the rest of these nations who are still among you, getting married to them and living with them and they with you:

Genesis 6:2-3

The sons of God saw that the daughters of men were fair; and they took wives for themselves from those who were pleasing to them.

Judges 3:6-7

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

Ezra 9:1-2

Now after these things were done, the captains came to me and said, The people of Israel and the priests and Levites have not kept themselves separate from the people of the lands, but have taken part in the disgusting ways of the Canaanites, the Hittites, the Perizzites, the Jebusites, the Ammonites, the Moabites, the Egyptians, and the Amorites.

Nehemiah 13:23-27

And in those days I saw the Jews who were married to women of Ashdod and Ammon and Moab:

2 Corinthians 6:14-17

Do not keep company with those who have not faith: for what is there in common between righteousness and evil, or between light and dark?

Treasury of Scripture Knowledge did not add

Basic English, produced by Mr C. K. Ogden of the Orthological Institute - public domain