The immediate impetus for the Tractarian movement was a perceived attack by the reforming Whig administration on the structure and revenues of the Church of Ireland (the established church in Ireland), with the Irish Church Temporalities Bill (1833). This bill not only legislated administrative changes of the hierarchy of the church (for example, with a reduction of bishoprics and archbishoprics) but also made changes to the leasing of church lands, which some (including a number of Whigs) feared would result in a secular appropriation of ecclesiastical property. John Keble criticised these proposals as "National Apostasy" in his Assize Sermon in Oxford in 1833. The Tractarians criticised theological liberalism. The Gorham Case in which secular courts overruled an ecclesiastical court on the matter of a priest with heretical views, was also deeply unsettling. Their interest in Christian origins caused some of them to reconsider the relationship of the Church of England with the Roman Catholic Church.