Here is an excerpt:
Responding to David’s words in Psalm 51:17, “The sacrifices of God are a broken spirit: a broken and a contrite heart, O God, Thou wilt not despise,” Bunyan addresses the proper condition of the human heart as an acceptable sacrifice, the broken heart.
John Bunyan of Elstow and Bedford, is important to the Reformed tradition, since his famous allegory is one of the chief avenues by which the Puritan spirit entered the mainstream of the English Reformation. With Calvinism as foundational, Bunyan’s prolific writings and fervent preaching embodied a vibrant awareness of Reformed theological thought and its implication for Christian living. The author of more than sixty books, he gained a unique place in history through Grace Abounding (1666), The Pilgrim’s Progress (pt. 1, 1678; pt. 2, 1684), The Life and Death of Mr. Badman (1680), and The Holy War (1682). Other works were primarily expository, doctrinal, and practical.