1 Corinthians 7:39

A wife is bound to her husband as long as he lives. But if her husband dies, she is free to be married to whom she wishes, only in the Lord.

2 Corinthians 6:14-17

Do not be yoked together with unbelievers. For what partnership have righteousness and lawlessness? Or what fellowship has light with darkness?

Hebrews 6:16

Men swear by one greater than themselves, and in all their disputes the oath is final for confirmation.

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