A TRARALGON child has clubbed his pocket money together with three others, paying $69.70 to launch a private criminal prosecution against the Jehovah's Witnesses.

The child, 11, who is due to give evidence on Monday at the state inquiry into how the churches handled child sex abuse, wanted to force the church to comply with working with children laws. After four hearings, to which church leaders did not send a representative, the church began complying and the Office of Public Prosecutions intervened to discontinue the case.

The inquiry will also hear from anti-Jehovah's Witness campaigner Steven Unthank, a former member of the church who says he and his family were ostracised and persecuted after he tried to tackle child abuse.

His submission alleges the church and its incorporated body, the Watchtower Society, covered up criminal child abuse, including rape, sexual assault, death threats, blackmail and assault, across four states by ordained ministers and officers of the church.

The Victorian and Civil Administrative Tribunal will hear a religious vilification complaint against the church by Mr Unthank in May, after the church said people who left the church, as he had, were ''mentally diseased''.