Deuteronomy 4:9
Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes have seen, and lest thy depart from thy heart all the days of thy life: but teach them thy sons, and thy sons, sons
What i think its saying here is fathers teach your sons the things of God, so your sons can teach your grand sons. As the man of the house your kids are gonna follow your lead. I could go in a million directions with this but i wont, what i will say as fathers if we dont rasie our childern acording to Gods plan they will learn from the world, and thats the last place you want your son to learn how to treat his future wife or your daughters future husband to treat her
God bless