“For what knowest thou, O wife, whether thou shalt saue thy husband? or how knowest thou, O man, whether thou shalt saue thy wife?”
1611 King James Version (KJV)
1Co 7:16 What knowest thou, O wife, whether thou shalt save [thy] husband? etc. Let the Christian be gentle, forbearing, unselfish, though true to Christ, and perhaps the result will be that they will be God's means to save their partner. This has occurred in thousands of instances.