After that generation died, another generation grew up who did not acknowledge the LORD or remember the mighty things he had done for Israel. (Judges 2:10 NLT)
Parents can't be satisfied with merely imparting a "theoretical faith" to their children. They must lead them into genuine encounters with the living Lord where their faith becomes personal and alive to them. Christianity is not about religious ceremonies, but about an "intimate relationship" with the person of Christ.