The Presbyterian Church of Australia is a part of the Christian Church throughout the world. What the Presbyterian Church of Australia Believes? The highest standard by which the Church‟s belief and practice is to be measured is the Word of God; the sixty-six books of the Old and New Testaments of the Bible. So that others can clearly understand what the Presbyterian Church of Australia believes is taught in the Bible, the Church has adopted the Westminster Confession of Faith (with two minor amendments) as a statement of its key doctrines. While the Church believes the Confession sets forth Biblical doctrines accurately and reliably, the Confession is always referred to as the subordinate standard and the Bible is the supreme standard.