The family is the first place where the children learn the teachings and law of our Lord Jesus Christ. If every family on earth will live according to God's law; whereby the man which is the head of the family will love his wife and children, the wife being submissive to the husband and children being obedient and respectful to their parents, I don't think there will be something like broken families.
In the book of Ephesians 6:1-4 we see the commandments of God to children. Children should always obey their parents so that their days will be long on earth, it is the admonition of God to children. We also see the commandments given to fathers; God commanded the fathers not to provoke their children, but instead they should bring them up in the nurture and admonition of the Lord.
The duty or obligation given to fathers is to pass the teachings of God to their children, unto the fourth generation. This means that fathers must be the first to know the admonitions, law and teachings of God in order to be able to pass it unto their children, because you can't teach what you don't know. They should be an example to their children by practicing the law and teachings of Christ so that their children can emulate that footstep.
In conclusion: Keeping the family intact biblically is the duty of parents. They should pass the teachings of Christ to their children by praying together, studying the bible and living in harmony, because a family that prays together stays together.
God bless you all.
There is always a need for us to establish our family in the way of the Lord actually
A home is one that should be in harmony and united