At 1 Peter 3:3 “adornment” translates the Greek word koʹsmos, elsewhere rendered “world.” The related verb ko·smeʹo is translated “adorn.”​—Tit 2:10.

Christian Counsel on Personal Adornment. Jesus and his apostles counseled constantly against putting trust in physical things and putting on a false show by means of material adornment. The apostle Paul said that Christian women should “adorn themselves in well-arranged dress, with modesty and soundness of mind, not with styles of hair braiding and gold or pearls or very expensive garb.” (1Ti 2:9) During the days of the apostles it was a custom among women in that world of Greek culture to go in for elaborate coiffures and other adornment. How appropriate, therefore, is Peter’s counsel to women in the Christian congregation not to put emphasis on ‘the external braiding of the hair and the putting on of gold ornaments or the wearing of outer garments’ but to let their adornment be, as with the faithful women of old, “the secret person of the heart in the incorruptible apparel of the quiet and mild spirit”!​—1Pe 3:3-5.