1 Corinthians 7:39

The wife is bound to her husband as long as he liveth; but if her husband die, she is free to marry whom she will, only in the Lord.

2 Corinthians 6:14-17

Be not strangely yoked with unbelievers; for what fellowship hath righteousness with unrighteousness? Or what communion hath light with darkness?

Hebrews 6:16

For men indeed swear by one who is greater, and the oath for confirmation is to them an end of all strife.

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