For 10 points, name this religious allegory by John Bunyan.
In this work, the House of the Interpreter matches the description of a rectory where the author once sought counsel from John Gifford. At one point in this work, the pillar of salt that used to be Lot's wife is found in the Valley of Ease. Pliable abandons the main character at the Slough of Despond. The companion of the protagonist, Faithful, is killed when he refuses to purchase the wares of Vanity Fair. This work follows Christian's travels down the King's Highway. For 10 points, name this religious allegory by John Bunyan.
In this work, the House of the Interpreter matches the description of a rectory where the author once sought counsel from John Gifford.
{Pilgrim's Progress}