What Is Sola Scriptura?

Sola Scriptura is a Latin phrase meaning 'Scripture alone.' It is one of the five solas of the Protestant Reformation and affirms that the Bible is the sole infallible authority for Christian faith and practice. This does not mean that Scripture is the only authority — the Reformers recognized useful tradition, councils, and teachers — but that Scripture alone is the supreme and final authority by which all other authorities are tested. The biblical basis for Sola Scriptura is extensive. Jesus rebuked the Pharisees for 'making the word of God of none effect through your tradition.' Paul commended the Bereans for examining his teaching against the Scriptures. The psalmist declared, 'Thy word is a lamp unto my feet, and a light unto my path.' The Reformers confronted a medieval system that placed church tradition, papal decrees, and conciliar decisions on equal or superior footing with Scripture. Martin Luther at the Diet of Worms declared that his conscience was captive to the Word of God. Ulrich Zwingli in the Zurich disputations insisted that what could not be proved by Scripture could not be required of believers. John Calvin built his Institutes on Scripture from beginning to end. Sola Scriptura means that the Bible is sufficient. It contains all that is necessary for salvation, faith, and godliness. We do not need additional revelations, private messages, or unwritten traditions to supplement God's Word. It also means that the Bible is clear. Its central message of salvation is understandable to ordinary believers. The priesthood of all believers flows from this — every Christian has access to God's Word and can know God's will. Sola Scriptura is not a rejection of tradition but a testing of it. Traditions that align with Scripture are welcomed; those that contradict it must be rejected. This principle keeps the church anchored to God's revealed truth rather than drifting with human opinion.