When Sinclair Ferguson was growing up in Scotland in the 1950s, the culture was not only Christian but also Reformed. Ferguson memorized Bible passages at his public school, learned nighttime prayers from parents who weren’t believers, and attended church for years before converting to Christianity.

In the years since, Ferguson has written more than 50 books, spoken at virtually every Reformed conference, and taught at nearly all the Reformed seminaries.

Meanwhile, the Church of Scotland membership has plummeted from 1.3 million to less than 300,000—that’s a million people lost in a single lifetime. The denomination has cut pastoral positions and discontinued ministries. Many of her massive granite church buildings are now restaurants and apartments and bars with names like Soul.

Ferguson retired a few years ago. After the career he’s had, he could speak anywhere and write for any publisher. But you won’t find him based in an influential American city or church or ministry. Instead, he’s in a small city in Scotland, writing sermons and preaching the evening services at a church of only 200.

This is a story about why he’s doing that, about why it matters. This is a story about the gospel, about hope, and about coming home.