1 Corinthians 7:39

A wife has been given so long a time as her husband may live; but if her husband may die, she is free to be married to whom she will; only in the Lord.

2 Corinthians 6:14-17

Be not unequally yoked together with unbelievers: for what participation is there to righteousness and unrighteousness? or what fellowship has light unto darkness?

Hebrews 6:16

For men swear by the greater: and an oath of confirmation is to them an end to all controversy:

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