Most Christians profess a belief in the church’s catholicity (from the Greek kath’holou: according to the whole). But what actually is catholicity and how can we construe it through different theological doctrines? Can one think of catholicity metaphysically rather than ecclesiologically? Some of the ressourcement theologians of the 20th century started rethinking catholicity. They pushed back against quantitative understandings (whether geo-spatial, sociological, or temporal) in favour of more qualitative understandings, going as far as to suggest that catholicity is ultimately a quality of God, or Christ, of the Spirit. They started to think of many different kinds of catholicities: quantitative, qualitative, actual, partial, virtual, secular, performative, diachronic, synchronic, creational, apophatic, amongst others. Within the context of a 5 year international research project based at the ACU, this panel invites papers which consider catholicity from the perspective of particular theological doctrines, across the Christian traditions from any time period or geographical location. The panel is particularly interested in paper proposals which focus on the doctrines of God, creation, salvation, sin, and theological anthropology. It is also interested in papers which explore catholicity’s coordination of the particular and the universal, its metaphysical structure and dynamics, and its connection to the development of doctrine.Session 1: Inside Out: Rethinking Catholicity Theologically Chair: Philip McCosker (Australian Catholic University)Speakers:Philip Moller SJ (Campion Hall, University of Oxford), Henri de Lubac and the catholicity of philosophical reasonSimon Oliver (Durham University), From the Inside: The Catholicity of LifeFáinche Ryan (Loyola Institute, Trinity College Dublin), Catholicity is from God: Perspectives from Thomas AquinasCarl Scerri (Campion Hall, University of Oxford), Philosophising ‘catholically’ – Erich Przywara and his philosophical methodSession 2: Rethinking Catholicity Theologically: Panel Discussion Speakers:Karen Kilby (Durham University)Philip McCosker (Australian Catholic University) John Milbank (Nottingham University)Stephan van Erp (KU Leuven/Australian Catholic University)Judith Wolfe (St Andrews University/Australian Catholic University)