Nehemiah 10:30
And that we would not give our daughters to the peoples of the lands, or take their daughters for our sons;
Exodus 34:16
Or take their daughters for your sons; for when their daughters give worship before their gods, they will make your sons take part with them.
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.
Ezra 9:1-3
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.
Ezra 9:12-14
So now do not give your daughters to their sons or take their daughters for your sons or do anything for their peace or well-being for ever; so that you may be strong, living on the good of the land, and handing it on to your children for a heritage for ever.
Ezra 10:10-12
And Ezra the priest got to his feet and said to them, You have done wrong and taken strange women for your wives, so increasing the sin of Israel.