Institutes of theChristian Religion is John Calvin’s seminal focus on Protestant systematictheology. Highly influential in the Western world and still widely read bytheological students today, it had been published in Latin in 1536 and in his nativeFrench in 1541. The publication acts as an introductory textbook over the Protestantfaith for all those with some earlier understanding of theology and addresses a broadrange of theological topics through the doctrines of cathedral and sacraments tojustification by faith alone and Christian liberty. It vigorously attacks teachings which Calvin considered unorthodox, particularly Roman Catholicismto which Calvin says he previously been “strongly dedicated” before his transformation toProtestantism. The overarching theme of the book-and Calvin’s greatesttheological legacy-is the thought of God’s total sovereignty, especially insalvation and election. Institutes of theChristian Religious beliefs is definitely highly-regarded as a second guide for thesystem of doctrine used by the Reformed churches, which is often referredto as Calvinism.