A second human institution where subjection can be challenging is marriage, especially if Peter’s readers were married to unbelievers. So in 1 Peter 3:1–7, Peter continues on the theme of honourable conduct befitting sojourners and exiles, focusing on wives and husbands. More, the mindset required for godly subjection in the context of slaves (as worked out in 1 Peter 2:21–25) is relevant for the mindset required for godly subjection in the context of marriage.
18 Serviteurs, soyez soumis en toute crainte à vos maîtres, non seulement à ceux qui sont bons et doux, mais aussi à ceux qui sont d'un caractère difficile.