Likewise, wives, be subject to your own husbands, so that even if some do not obey the word, they may be won without a word by the conduct of their wives, 2 when they see your respectful and pure conduct. 3 Do not let your adorning be external—the braiding of hair and the putting on of gold jewellery, or the clothing you wear— 4 but let your adorning be the hidden person of the heart with the imperishable beauty of a gentle and quiet spirit, which in God's sight is very precious. 5 For this is how the holy women who hoped in God used to adorn themselves, by submitting to their own husbands, 6 as Sarah obeyed Abraham, calling him lord. And you are her children, if you do good and do not fear anything that is frightening.1 peter 3:1-6

Peter had begun instruction to the beliving slave and now moves to the responsibility of wife at home, specifically a relationship with an unbelieving husband.

In Greco-Roman society it was expected that the wife would have no friends of her own and would worship the gods of her husband Second, the husband and society would perceive the wife’s worship of Jesus Christ as rebellion, especially if she worshipped Christ exclusively. Peter asks the women to be subjective to the unbelieving husband even if he is a non-believer. Now there are two reasons behind it

1) A rebellious wife was a social evil and that would dismantle the family and also other christians would have to face the issues.

2) The whole approach of submission was motivated by evangelistic intent.

To win an unbelieving husband peter says Christian women’s beauty is to be the inner quality of a gentle and quiet spirit, which is of great worth in God’s sight, and not the costly adornment of elaborate hairstyles, fine clothing, and gold jewellery, which are, of course, of great worth in society’s sight. The unbelieving husband observes virtues in the wife that are motivated by her relationship with Christ and observing this, the man himself may be won to Christ “without words”.