HEARTBREAKER- Although your mother and father may claim Jehovah , i.e. the WT society has healed your dad of his " child abuse tendencies" - don't believe it for a minute. Most pedophiles don't change or heal from their perversions. That's a known fact. I would highly recommend for the safety of your children to keep them the hell away from your dad. The conceit and arrogance of the WT society includes the fact that they think they are smarter than psychologists who realize most child abusers CANNOT be cured . They think by reading WT magazines and knocking on doors they'll be cured. That is an illusion.
The recommendations to get off facebook are good. But I would put your dear children's safety as the HIGHEST priority here. Just my 2 cents