1 Peter 3:1-6 NKJV

1 Wives, likewise, be submissive to your own husbands, that even if some do not obey the word, they, without a word, may be won by the conduct of their wives,
2 when they observe your chaste conduct accompanied by fear.
3 Do not let your adornment be merely outward--arranging the hair, wearing gold, or putting on fine apparel--
4 rather let it be the hidden person of the heart, with the incorruptible beauty of a gentle and quiet spirit, which is very precious in the sight of God.
5 For in this manner, in former times, the holy women who trusted in God also adorned themselves, being submissive to their own husbands,
6 as Sarah obeyed Abraham, calling him lord, whose daughters you are if you do good and are not afraid with any terror.