1 Timothy 3:2, 4, 12

Now an overseer must be blameless and beyond reproach, the husband of one wife, self-controlled, sensible, respectable, hospitable, able to teach

He must manage his own household well, keeping his children under control with all dignity [keeping them respectful and well-behaved]

Deacons must be husbands of only one wife, and good managers of their children and their own households.