The Puritans left behind a great store of wisdom—rigorously theological, warmly devotional, and always centered on Christ and his gospel. Sadly, given the diminishing attention paid to language, grammar, and the humanities, they are less accessible to modern audiences than they deserve. Still, there are a few Puritan works that are short and simple enough that I wouldn’t hesitate to suggest every English-speaking Christian read them. John Bunyan’s The Pilgrim’s Progress would head the list,…