Preaching the Gospel to our Children

What do you do as a parent when your children disobey you? How does the gospel of Jesus Christ impact the way we parent our children. Rob Wilkerson rightly calls us to point to Christ's obedience on the cross as substitution even when we discipline and admonish our children. When our kids disobey should we just preach to them about repentance, confession, Ephesians 6:1, and remind them of what happened to children in the OT when they disobeyed. Is there more to correction than this?