An introduction to the Bible and a vindication of Reformation principles by one of the Reformation's scholars. Written as an introductory textbook on the Protestant faith for those with some learning already, it covers a range of theological topics from the doctrines of church and sacraments to justification by faith alone.

This book was written as a theological introduction to the Bible and a vindication of Reformation principles. After appearing in several editions beginning in 1536, Calvin's 'Institutes' was finally published in this authoritative 1559 edition.