Proverbs 31:28-29 declares concerning a wife of noble character that her husband says of her "Many women do noble things, but you surpass them all." (NIV). So beyond drawing praise from her husband, such a woman also causes her husband to respect and recognize virtue in other women.
This presents wives with a significant potential ministry to the broader culture of the current generation, especially when that broader culture tends to denigrate women. A man who sees that "many women do noble things" (recognizing the presence of virtue in many women and by implication the potential for virtue in even more) is less likely to tolerate the expression of radically contrary views (viewing all women as wicked) in his social circle. A noble wife is perceived not as an exception that emphasizes the wickedness of other women but more as an archetype demonstrating the ideal nature of women.