Ephesians 6:4 says regarding parents to their children, "…bring them up in the training and admonition of the Lord." The study notes from the Spirit-Filled Life Bible under this portion reads:

God holds parents responsible for the upbringing of children – not grandparents, not schools, not the state, not youth groups, not peers and friends. Although each of these groups may influence children, the final duty rests with parents, and particularly with the father, whom God has appointed "head" to lead and serve the family. Two things are necessary for the proper teaching of children: a right attitude and a right foundation. An atmosphere reeking with destructive criticism, condemnation, unrealistic expectations, sarcasm, intimidation, and fear will "provoke a child to wrath." In such an atmosphere, no sound teaching can take place.

The positive alternative would be an atmosphere rich in encouragement, tenderness, patience, listening, affection, and love. In such an atmosphere parents can build into the lives of their children the precious foundation of knowledge of God

Proverbs 22:6 says, "Train up a child in the way he should go, and when he is old he will not depart from it." The footnotes under this passage says:

Train up has the idea of a parent graciously investing in a child whatever wisdom, love, nurture, and discipline is needed for him to become fully committed to God. It presupposes the emotional and spiritual maturity of the parent to do so. In the way he should go is to do the training according to the unique personality, gifts, and aspirations of the child. It also means to train the child to avoid whatever natural tendencies he might have that would prevent total commitment to God (for example, a weak will, a lack of discipline, a susceptibility to depression). Hence, the promise is that proper development insures the child will stay committed to God.