The church has no official name but is often referred to as The Truth or the Two by Twos.
The sect has recently been rocked by a sexual abuse scandal, with the names of hundreds of alleged perpetrators given to a hotline set up for survivors.
An ex-minister who abused a boy in the 1980s told the BBC he had “no reason” to be concerned about the FBI probe.
Religion and sex abuse, who would have thought?