1 Peter 3:1-5

In the same way you wives must submit yourselves to your husbands, so that if any of them do not believe God's word, your conduct will win them over to believe. It will not be necessary for you to say a word, because they will see how pure and reverent your conduct is. You should not use outward aids to make yourselves beautiful, such as the way you fix your hair, or the jewelry you put on, or the dresses you wear. Instead, your beauty should consist of your true inner self, the ageless beauty of a gentle and quiet spirit, which is of the greatest value in God's sight. For the devout women of the past who placed their hope in God used to make themselves beautiful by submitting themselves to their husbands.