John Wesley considered himself to be in the Reformation tradition of sola scriptura (Scripture alone), and he liked to refer to himself as homo unius libri (a man of one book) . . . There was no question that Scripture represented the primary source of religious authority.
In affirming sola scriptura, Wesley never intended solus (alone) to mean exclusive religious authority.See also Albert C. Outler, ed., John Wesley (New York: Oxford University Press, 1980), 28, n101. Wesley considered Scripture primary, but he recognized that other factors played complementary roles in matters of faith and practice. In particular, Wesley referred to tradition, reason, and experience as inextricably bound up with Scripture in our understanding of true Christianity. . .
According to Wesley, tradition represented the one source of religion other than Scripture that added substantively to Christianity. Scripture represents the primary substance of Christian belief and practice; tradition, reason, and experience represent complementary—albeit secondary—resources in the interpretation of Scripture. Yet tradition gives to us the canon of Scripture. It also gives to us the creeds and the earliest teachings of Christian antiquity, which provide the standards of orthodoxy.