Australia's most senior rabbi has resigned days after revelations at a royal commission that he called the father of three child abuse victims a lunatic". The senior vice-president of the Organisation of Rabbis of Australasia, Rabbi Yoram Ulman, confirmed to Fairfax Media that Rabbi Meir Shlomo Kluwgant had stepped down as president of the organisation. This follows calls for Rabbi Kluwgant to resign from all his public positions after appearing at the Royal Commission on Institutional Responses to Child Abuse on Friday, the final day of its hearing on Yeshivah Melbourne and Yeshiva Sydney's response to child sexual abuse allegations against convicted offenders David Cyprys, David Kramer and Daniel Hayman. Three of [Zephaniah] Waks' children were abused as students of Yeshivah College in Melbourne, including Manny, the founder of Jewish victims support group Tzedek. Asked by the Waks' lawyer, Melinda Richards: "Did you, Rabbi, send a text message to Mr Lawrence saying 'Zephaniah is killing us. Zephaniah is attacking Chabad. He is a lunatic on the fringe. Guilty of neglect of his own children. Where was he when all this was happening?" "I may have said that, yes," he replied. Both Manny and Zephaniah previously told the commission they had relocated overseas following years of intimidation from the ultra-orthodox Chabad community, in response to going public with abuse allegations.