Religion in the Republic of Ireland
The predominant religion in the Republic of Ireland is Christianity, with the largest church being the Roman Catholic Church. The Irish constitution says that the state may not endorse any particular religion and guarantees freedom of religion.
Christianity in Ireland
The Presbyterian Church in Ireland, operating on an all-Ireland basis, is the largest Presbyterian denomination in Ireland, and the largest Protestant denomination in Northern Ireland. The motto is "Ardens sed Virens" – burning but flourishing. The Church has a membership of approximately 300,000 people in 550 congregations across Ireland. About 96% of the membership is in Northern Ireland. It is the second largest church in Northern Ireland, the first being the Catholic Church in the Republic of Ireland the church is the second largest Protestant denomination, after the Church of Ireland.