Carl Sommer presents a popular study of the faith and life of the early Christians in the first two centuries after Christ. Using documentary evidence and archaeological records, Sommers reconstructs the lives of the early Christians in order to "introduce the treasures of early Christianity to a large number of modern readers".

By studying how the early Christians believed and lived, we can learn many valuable lessons on what to avoid and what to strive for today. The Roman world had many facets that are strikingly similar to elements of modern life. Sommer's aim is to help the reader learn how to transform modern culture with the power of the Gospel as was first done in the centuries of the early Church.