While they behold your chaste conversation coupled with fear. Chaste conversation - with fear - While they see that ye join modesty, chastity, and the purest manners, to the fear of God. Or perhaps fear, φοβος, is taken, as in Ephesians 5:33, for the reverence due to the husband.
Related Commentaries of 1 Peter 3:2
1 Peter 3:2
2 While they behold your chaste conversation coupled with fear.