1 Corinthians Chapter 7, Verse 16
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16: τι γαρ οιδας γυναι ει τον ανδρα σωσεις η τι οιδας ανερ ει την γυναικα σωσεις
16: For what knowest thou, O wife, whether thou shalt save thy
husband? or how knowest thou, O man, whether thou shalt save
thy wife?
16: For how knowest thou, O wife, whether thou shalt save thy husband?
Or how knowest thou, O man, whether thou shalt save thy wife?
For what knowest thou, etc. The apostle here assigns a reason why the believing party should not separate from the other needlessly, or why he should not desire to be separated. The reason is, the possibility or the probability that the unbelieving party might be converted by the example and entreaties of the other.
Whether thou, etc., How do you know but this may be done? Is there not a possibility, nay, a probability of it, and is not this a sufficient reason for continuing together?
Save thy husband. Gain him over to the Christian faith; be the means of his conversion and salvation. Comp. Rom 11:26.

