The Apostle Peter
1 Peter 3:4BSB·traditional attribution

but from the inner disposition of your heart, the unfading beauty of a gentle and quiet spirit, which is precious in God’s sight.

John Calvin Reformed @genevareformer

4 But let it be the hidden, man of the heart The contrast here ought to be carefully observed. Cato said, that they who are anxiously engaged in adorning the body, neglect the adorning of the mind: so Peter, in order to restrain this desire in women, introduces a remedy, that they are to devote themselves to the cultivation of their minds.

Matthew Henry Presbyterian @wholebiblehenry

The apostle having treated of the duties of subjects to their sovereigns, and of servants to their masters, proceeds to explain the duty of husbands and wives. I. Lest the Christian matrons should imagine that their conversion to Christ, and their interest in all Christian privileges, exempted them from subjection to their pagan or Jewish husbands, the apostle here tells them, 1. In what the duty of wives consists.

Commenting on 1 Peter 3:1-7

John Gill Reformed Baptist @doctorgill

But let it be the hidden man of the heart,.... By which is meant internal grace; which gives a beauty and ornament to the soul, far preferable to that which plaiting of the hair, wearing of gold, or any costly apparel, can give to the body: and this is called a man, as it is elsewhere the new man, Eph 4:24 because it has that...