having a good conscience; that, while you are spoken against as evildoers, they may be disappointed who curse your good manner of life in Christ.

 He does not advise the wife to leave her husband. In this he takes exactly the same attitude as Paul takes ( 1 Corinthians 7:13-16). Both Paul and Peter are quite sure that the Christian wife must remain with the heathen husband so long as he does not send her away. Peter does not tell the wife to preach or to argue. He does not tell her to insist that there is no difference between slave and freeman, Gentile and Jew, male and female, but that all are the same in the presence of the Christ whom she has come to know. 