The Lambeth Quadrilateral is the name given to the four key principles that form the basis for the union of various churches that make up the Anglican faith:
The quadrilateral was first declared by the General Convention of the Protestant Episcopal Church in Chicago in 1886 and were amended and adopted at the 1888 Lambeth Conference.
- acceptance of the Holy Scripture as the rule of faith;
- the Apostles' and the Nicene creeds;
- the sacraments of Baptism and the Lord's Supper;
- and the principle of church government based on bishops.