Divided by Hate (1997)

Louis Gibbs toils tirelessly to build a future for his wife Carol and three young kids by building a farm in the Bible Belt. Times are hard and credit tight, so several neighboring farms go belly up. Instead of doing her domestic work properly, Carol starts making crazy expenses and joins dodgy reverend Steve Riordan's bible classes. In fact Riordan heads a nutty, armed anti-government and anti-'Jewish bankers' apocalyptic cult. Louis only realizes the full truth after Carol has joined with their kids, completely brainwashed. Sheriff Higgins sympathizes but can't help Louis get his children back legally, so he files for separation. But Riordan's disciples will stop at nothing to keep his Aryan Nation flock together. Desperate Louis ultimately turns to private detective Danny Leland to get his kids back any way it takes