God: "I looked for someone to take a stand for me, and stand in the gap" (Ezekiel 22:30)
Your top-priority job as a parent, then, is to be an evangelist in your home. You need to teach your children the law of God; teach them the gospel of divine grace; show them their need for a Savior; and point them to Jesus Christ as the only One who can save them. If they grow up without a keen awareness of their need for salvation, you as a parent will have failed in your primary task as their spiritual leader.