This article explores the interpretation and application of the term ‘doctrine’ within the Anglican Church of Australia and its implications in Australian civil law, particularly anti-discrimination legislation. It examines the tension between (1) the constitutional definition in the Church's constitution and (2) broader interpretations found in General Synod resolutions. The anxiety evident in the General Synod resolutions underscores ongoing debates within the Church about same-sex marriage and relationships and the application of secular exemptions in anti-discrimination legislation. The article concludes that the civil law definition of the term ‘doctrine’ is wide enough to encompass both the Anglican Church of Australia's constitutional definition and the broader meaning found in General Synod resolutions. Nevertheless, care needs to be taken by the Church to avoid the risk of civil courts being called upon to engage in their own exegesis of scripture, and thereby come to conclusions which are at odds with the avowed beliefs of the Church.