1 Corinthians 7:16

For what knowest thou, O wife, whether thou shalt save thy husband? or how knowest thou, O man, whether thou shalt save thy wife?

By staying with thy unbelieving partner thou mayest save him or her. Enforcing "peace" with the unbelieving consort (, end). So Ruth the Moabitess became a convert to her husband's faith: Joseph and Moses probably gained over their wives. Conversely, the unbelieving husband may be won by the believing wife (). Alford explains , 'If thy unbelieving consort wishes to depart, let him go, that thou mayest live "in peace:" for thou canst not be sure of converting him, so as to make it obligatory on thee at all costs to keep him against his will.'

Save - be the instrument of saving ().