Bunyan's business was the description of a pilgrim's progress through a world thus vividly good and bad. His choice of allegory as a method allowed him to illustrate at the same time the earnestness of his times and their extraordinary clarity of sensation. It was a form ready to his hand. The authorised version of the Bible, published in 1611, its English retaining the savour of a style then out of date, formed at once his writing and his method, as it constituted his education. 'My Bible and Concordance are my only library in my writings.'