Judaism is not the hellfire and brimstone of the Salem, Massachusetts zealots who burned women for being witches. Judaism is love, compassion, mercy, and findingthe good in everyone.
When parents use the whip of negative reinforcement, readily threatening, yelling and punishing, the child will despise whatever they're trying to teach. When a parent tries to use anger as a means of education, he is not educating at all, for anger does not instill love, but rather intimidation and hatred.
If you want to educate your child in Judaism, then use positive reinforcement only. Make every Jewish experience a joyful one. Don't force. Be a shining personal example. Then wait and see how much joy you'll get back.