Pilgrim’s Progress is an allegory about every Christian (journeying from the City of Destruction to the Celestial City), but it is particularly reflective of Bunyan’s own experience. A tinker by trade, Bunyan was used to travelling from village to village with a 60-pound anvil and hefty toolkit on his back: it became a model for the great burden of sin his pilgrim carries on his back (until he comes to the cross and it is ‘loosed from off his shoulders’ to his enormous relief).

