Children need to see their parents coming before the throne of grace, daily. By interceding for them. WE can intercede for them as priests did in the Old Testament and as Christ does today. By cleansing them. We cleanse our spouses and children by the Word of God, as priests of the Old Testament cleansed away the sins by temple sacrifices.
Parents are to be kings to their children, because by nature they are weak and helpless.
Proclaiming - Godly Kings proclaimed the truth as Josiah did when the law was found in the temple. Providing - Godly Kings provided for the physical and spiritual needs of their people. Parents are worse than unbelievers if they do not provide for the necessities of their families. We must recognize that we live in a fallen culture. The forces of evil are no longer restrained by general societal norms.