Methodism fully affirms the doctrine of the Trinity as expressed in the Nicene and Apostles' Creeds. The Methodist Articles of Religion (Article I) confess one living and true God, eternal, without body or parts, of infinite power and wisdom, the maker and preserver of all things — and that in the unity of this Godhead there are three persons of one substance, power, and eternity: the Father, the Son, and the Holy Ghost. Wesley himself regularly preached on Trinitarian themes and treated the Trinity as the essential framework for understanding salvation.

The Book of Discipline of the United Methodist Church affirms the creeds of the church as 'landmarks of tradition' that 'envision the substance of the Christian faith.' Wesley's Standard Sermons and Explanatory Notes treat the Trinity as foundational and non-negotiable. The Wesleyan tradition has consistently distinguished itself from Unitarian and other non-Trinitarian movements that emerged in Wesley's era.