John Bunyan was an English preacher, but today he's most famous for writing the seminal Pilgrim's Progress, one of history's most famous and popular allegorical works. Bunyan even has a festival in his honor within the Church of England.
While this treatise is not as well known as Pilgrim's Progress Bunyan wrote A Treatise of the Fear of God in 1679, and in it he discusses why Christians should love, respect, and "fear" God. Essentially, that fear of God will compel Christians to try to right their wrongs