New Revised Standard Version
Wife, for all you know, you might save your husband. Husband, for all you know, you might save your wife.

Contemporary English Version
And besides, how do you know if you will be able to save your husband or wife who isn't a follower?

New American Bible
For how do you know, wife, whether you will save your husband; or how do you know, husband, whether you will save your wife?

Douay-Rheims Bible
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 how knowest thou, O wife, whether thou shalt save thy husband? Or how knowest thou, O man, whether thou shalt save thy wife?

O wife.

1 Corinthians 9:22 To the weak I became weak, that I might gain the weak. I became all things to all men, that I might save all.

Proverbs 11:30 If the just man receive in the earth, how much more the wicked and the sinner.

Luke 15:10 So I say to you, there shall be joy before the angels of God upon one sinner doing penance.

1 Timothy 4:16 Take heed to thyself and to doctrine: be earnest in them. For in doing this thou shalt both save thyself and them that hear thee.

James 5:19,20 My brethren, if any of you err from the truth and one convert him: . . .

1 Peter 3:1,2 In like manner also, let wives be subject to their husbands: that, if any believe not the word, they may be won without the word, by the conversation of the wives, . . .

how.