2 Corinthians 6:14
Be not unequally yoked with unbelievers; for what fellowship has righteousness with lawlessness? what communion has light with darkness?
1 Corinthians 7:14
For the unbelieving husband is consecrated through union with his believing wife; and the unbelieving wife, through union with her believing husband. Otherwise your children would be unholy, but now they are consecrated to God.
Treasury of Scripture Knowledge
Summary
For they have taken of their daughters for themselves, and for their sons: so that the holy seed have mingled themselves with the people of those lands: yea, the hand of the princes and rulers hath been chief in this trespass.
The holy seed
Mingled
Bible References
The holy seed
1 Corinthians 7:14
For the unbelieving husband is consecrated through union with his believing wife; and the unbelieving wife, through union with her believing husband. Otherwise your children would be unholy, but now they are consecrated to God.
Mingled
2 Corinthians 6:14
Be not unequally yoked with unbelievers; for what fellowship has righteousness with lawlessness? what communion has light with darkness?