Unde enim scis mulier, si virum salvum facies? aut unde scis vir, si mulierem salvam facies?
For how knowest thou, O wife, whether thou shalt save thy husband? Or how knowest thou, O man, whether thou shalt save thy wife?
Unde nam sci muliere, si viro salva fac? Aut unde sci viro, si muliere salva fac?