There are a number of reasons why this is a bad plan:
1. You have to train them to believe things without evidence, so as soon as they realize other religions have other gods and different beliefs that are just as unsupported as yours, they will abandon your training.
2. You have to train them to fear hell, a non-existent place, which is child abuse.
3. You admit it's not true, since you are doing it for a practical result.
4. It's useless anyway, since the bible gives many reasons why one is obligated to be immoral, such as killing "witches", and who couldn't be a witch? It says gay behavior is an abomination, punished by stoning. It says you can own another person, and slavery is immoral.