Moriarty was appointed the first parish priest of Deansrath – a then-developing area near Clondalkin that had been constituted from Bawnogue – from 1983 to 1989, and subsequently parish priest of Donaghmede from 1989 to 1991.[1][3]
Moriarty was elected chairman of the diocesan council of priests in the late 1980s.[1]
During his episcopate, in response to a consultation process on pastoral priorities for the diocese, he introduced the "Reach Out" initiative, in which parishioners in all churches in the diocese were invited during Advent to bring home a candle and an envelope containing an explanatory leaflet and a table prayer card.[6] He also chaired the Commission for Worship, Pastoral Renewal and Faith Development of the Irish Catholic Bishops' Conference.[7]
Resignation
Following the publication of the Murphy Report on 29 November 2009 and the resignation on 17 December of former auxiliary bishop of Dublin and then-Bishop of Limerick, Donal Murray, amid criticism at his handling of allegations against several priests, it was widely expected that Moriarty would resign as Bishop of Kildare and Leighlin.[8][9] The report stated that Moriarty had received a complaint in 1993 about a priest's contact with young children – named in the report as Fr Edmondus – and that no attempt has been made by the archdiocesan governance to check archives or other files relating to Fr Edmondus when this complaint was received. The report added that Moriarty had told the commission that while he did not have access to the archives, he could have asked then-ArchbishopDesmond Connell to conduct a search.[10]
Moriarty released a statement on 23 December 2009, stating that while the report did not criticise him directly, he fully accepted the overall conclusion of the Commission of Investigation. On the basis that in his capacity as an auxiliary bishop in the Archdiocese of Dublin, he had failed to challenge the culture of how abuse allegations were handled, he announced that he had offered his resignation to Pope Benedict XVI, which was formally accepted on 22 April 2010.[11][12][13][14][15]
Retirement and death
Following his resignation as Bishop of Kildare and Leighlin, Moriarty served as an assistant priest in Saint Anthony's parish, Clontarf.[7]
He died on 26 March 2022 in Cherryfield Lodge Nursing Home, Milltown, Dublin.[16][17]