Nehemiah 10:30
And that we would not give our daughters unto the people of the land, nor take their daughters for our sons:
Exodus 34:16
And you take of their daughters unto your sons, and their daughters go play the harlot after their gods, and make your sons go play the harlot after their gods.
Deuteronomy 7:3
Neither shall you make marriages with them; your daughter you shall not give unto his son, nor his daughter shall you take unto your son.
Ezra 9:1-3
Now when these things were done, the leaders came to me, saying, The people of Israel, and the priests, and the Levites, have not separated themselves from the people of the lands, in regard to their abominations, even of the Canaanites, the Hittites, the Perizzites, the Jebusites, the Ammonites, the Moabites, the Egyptians, and the Amorites.
Ezra 9:12-14
Now therefore give not your daughters unto their sons, neither take their daughters unto your sons, nor seek their peace or their wealth forever: that you may be strong, and eat the good of the land, and leave it for an inheritance to your children forever.
Ezra 10:10-12
And Ezra the priest stood up, and said unto them, You have transgressed, and have taken foreign wives, to increase the trespass of Israel.