I've been looking for a comprehensive history of the Christian church for quite some time. After browsing through half a dozen large tomes from the library with no success, I came across this FREE Kindle book by chance. It was exactly what I was looking for: short, simple chapters about the apostles, martyrs, patriarchs, monks, popes, etc. up to the Reformation (frankly I wish it had gone on past the Reformation but there are other books for that). This must have been a textbook written for young people, it is that simple but concise, introducing terms and figures from history. Robertson walks us through how the church spread from Jerusalem to Greece, Rome and Europe, how the Eastern and Western churches split because of politics and the rise of Islam. Then he explains how the church of Rome gained power and wealth, and the effects of the power struggles that resulted.