John Calvin

John Calvin (1509–1564) was the foremost second-generation Reformer and the theologian whose systematic mind gave the Reformed tradition its characteristic shape. Born in Noyon, France, he was trained as a humanist scholar and lawyer before a sudden conversion — described by him as God "subduing his heart to teachableness" — redirected his life entirely to the cause of evangelical reform.

His Institutes of the Christian Religion, first published in 1536 when Calvin was twenty-six and expanded through four major editions until the definitive 1559 version, is the masterpiece of Reformation theology: clear, comprehensive, deeply biblical, and organized with a lawyer's precision. From the knowledge of God to the final resurrection, it covers the entire range of Christian doctrine in a way that has shaped Protestant theology across every tradition and every century since.

Calvin settled in Geneva in 1536, was expelled in 1538, and returned in 1541 at the city's request — staying until his death in 1564. As the city's leading pastor and teacher, he preached expository sermons through virtually every book of the Bible (often daily), wrote commentaries on almost the entire Bible, corresponded with Protestant rulers and reformers across Europe, founded the Geneva Academy in 1559, and trained the ministers who carried Reformed doctrine into France, Scotland, the Netherlands, England, and beyond. He was driven by a single passion: that God should be glorified in all things, and that the church should be ordered according to Scripture alone.

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