Loading... Please wait...Over the past several years, there has been a revival of interest in Reformed covenantal thought. The reprint "The Great Mystery of the Covenant of Grace," by Samuel Petto (1624-1711), presents an expression of covenantal theology from the Puritan era. The prominent Puritan theologian John Owen (1616-1683) prefaced Petto's book with a letter to the reader. This edition also carries an introductory essay by Mark Jones.