My reading on the subject has tended to support the idea that Methodists believe in Prima Scriptura, not Sola Scriptura. This would be consistent with their Anglican roots. Of course the concepts are blurred. Someone who rejects Catholicism may say they believe in Sola Scriptura, when they just believe in a reduced Tradition.
Than what, pray tell, does “alone” mean? Complete the sentence: Scripture alone is …
From the Thirty-Nine Articles of Religion of the Church of England:
VI. Of the sufficiency of the holy Scriptures for salvation.
Holy Scripture containeth all things necessary to salvation: so that whatsoever is not read therein, nor may be proved thereby, is not to be required of any man, that it should be believed an article of the Faith, or be thought requisite or necessary to salvation. In the name of the holy Scripture we do understand those Canonical Books of the Old and New Testament, of whose authority was never any doubt in the Church.
From the Articles of Religion of the Methodist Church, written by John Wesley and adapted from the Thirty-Nine Articles:
Article V — Of the Sufficiency of the Holy Scriptures for Salvation
The Holy Scripture containeth all things necessary to salvation; so that whatsoever is not read therein, nor may be proved thereby, is not to be required of any man that it should be believed as an article of faith, or be thought requisite or necessary to salvation. In the name of the Holy Scripture we do understand those canonical books of the Old and New Testament of whose authority was never any doubt in the church. The names of the canonical books are:
Genesis, Exodus, Leviticus, Numbers, Deuteronomy, Joshua, Judges, Ruth, The First Book of Samuel, The Second Book of Samuel, The First Book of Kings, The Second Book of Kings, The First Book of Chronicles, The Second Book of Chronicles, The Book of Ezra, The Book of Nehemiah, The Book of Esther, The Book of Job, The Psalms, The Proverbs, Ecclesiastes or the Preacher, Cantica or Songs of Solomon, Four Prophets the Greater, Twelve Prophets the Less.
All the books of the New Testament, as they are commonly received, we do receive and account canonical.
From the Confession of Faith of The Evangelical Brethren Church (which merged with the Methodist Church and whose confession remains a confession of the UMC):
Article IV — The Holy Bible
We believe the Holy Bible, Old and New Testaments, reveals the Word of God so far as it is necessary for our salvation. It is to be received through the Holy Spirit as the true rule and guide for faith and practice. Whatever is not revealed in or established by the Holy Scriptures is not to be made an article of faith nor is it to be taught as essential to salvation.
The “Alone” in Scripture Alone has never meant, to any Protestant, that there are not other sources by which we can learn about God or theology. It has always meant that all of those other sources are inferior to Holy Scripture in their purity and their authority. Scripture is “alone” in its role as final arbiter of what is sufficient for the Christian life.
John Wesley used Tradition, Reason, and religious Experience as lenses by which he could interpret Scripture. You can say Scripture has primacy, but it is more than that and Wesley himself never denied Sola Scriptura.
From a Lutheran source
wels.net/what-we-believe/questions-answers/christian/methodist-beliefs
The United Methodists see Scripture as the primary source and criterion for Christian doctrine. They emphasize the importance of tradition, experience, and reason for Christian doctrine. Lutherans teach that the Bible is the sole source for Christian doctrine. The truths of Scripture do not need to be authenticated by tradition, human experience, or reason. Scripture is self authenticating and is true in and of itself.
With all due respect to the venerable Wisconsin Evangelical Lutheran Synod, this is frankly the narcissism of minor differences. Methodists do use the term “primacy” or “primary.” But to make Methodists sound as if they believe in a primacy of Scripture in contrast to Sola Scriptura is to distort what they believe about themselves and distort what Sola Scriptura has actually meant throughout history.
Now, there are liberal Methodists who might like to distort history and make Wesley seem as if he and early Methodists believed that Scripture was simply one among many sources of religious authority. But Wesley himself believed:
“We believe, indeed, that “all Scripture is given by the inspiration of God;” and herein we are distinguished from Jews, Turks, and Infidels. We believe the written word of God to be the only and sufficient rule both of Christian faith and practice; and herein we are fundamentally distinguished from those of the Romish Church.”
- John Wesley, The Character of a Methodist
“I allow no other rule, whether of faith or practice, than the Holy Scripture.”
“The Church is to be judged by the Scripture, not the Scripture by the Church.”
“Scripture is the best expounder of Scripture.”
- Letter of John Wesley to John Dickens, Works of John Wesley, X:142