1 Corinthians 7:16

For what knowest thou, O wife, whether thou shalt save thy husband? If we take the first meaning of "peace" given above, the sense will be: Live in peace as far as you can, O believer, with your unbelieving partner, for you know not the good that he may derive thence: perhaps by living with him you will convert him and save him. So Chrysostom, Ambrose, Anselm, Theophylact, and others, If we take the second meaning of peace, the sense will be still better. Peace is the gift of Christ; to this have we been called by Christ, not to unhappy and quarrelsome slavery. If, therefore, the unbeliever seeks by quarrels, abuse, by threats against the faith and against his faithful partner, to drive her away, let her depart and live peacefully, and give up all hope of his conversion. For what ground of hope is there of one that is a heathen, blasphemous, and quarrelsome? Therefore, what do you know, or whence do you hope to save him?