VATICAN CITY (Reuters) A top Vatican official on Monday told Irish bishops in Rome for talks with Pope Benedict on the Irish churchs vast pedophilia scandal that clergy who had sinned must admit blame for abominable acts. The message came in the sermon of a mass in St Peters Basilica shortly before the bishops began two days of crisis talks with the pope to formulate a response to the revelations of abuse by clergy that have shaken devoutly Catholic Ireland. Yes, storms spark fear, even those that rock the boat of the church because of the sins of its members, Vatican Secretary of State Cardinal Tarcisio Bertone, number two in the Vatican hierarchy, told the bishops. Bertone said trials within the church are naturally harder and more humiliating particularly when men of the church were involved in such particularly abominable acts. The meetings, the first of their kind at the Vatican in eight years, will discuss a plan of action and could lead to more prelates resigning in a shakeup of the Irish church hierarchy. Four have already quit. Benedict, the 24 Irish bishops and top Vatican officials will hold three sessions in response to outrage in Ireland over the Murphy Commission Report, a damning indictment of child sex abuse by priests. Bertone said Gods mercy could pull one out of the deepest abyss but only if the sinner recognizes his blame in full truth. The report, published in November, said the church in Ireland had obsessively concealed child abuse in the Dublin archdiocese from 1975 to 2004, and operated a policy of dont ask, dont tell. It said all Dublin bishops in charge during the period under study had been aware of some complaints, but the archdiocese had been more preoccupied with protecting the reputation of the church than safeguarding children. Four bishops have offered their resignations and the pope has so far accepted one. Victims group One in Four called on other bishops thro-ughout Ireland who engaged in a culture of cover-up to step down. Victims groups said they would seek monetary compensation, which could lead to a financial crisis for the Irish church. In the U.S. church, hit by a similar scandal in 2002, seven dioceses have filed for bankruptcy protection in the wake of thousands of sex abuse claims against priests. The Vatican said in December the pope would write to the Irish people about the crisis the first time a pontiff will have devoted a document solely to clergys abuse of children. The pope has strongly condemned such abuse during his trips to two countries hard hit by scandals the United States and Australia. In December, he expressed his outrage, betrayal and shame over the Irish case. But critics say the Vatican and the church have not gone far enough in handing over suspected abusers to civil justice. The current archbishop of Dublin, Diarmuid Martin, who took his post after the period covered by the report, has said he expected a very significant reorganization of the church in Ireland. The churchs prominent role in Irish life was one of the reasons abuses were allowed to go unchecked, the report said. One priest admitted abusing more than 100 children. Another said he had abused children every two weeks for over 25 years.