The book contains the lives of the Savior's disciples - the twelve apostles, the apostles from seventy, descriptions of the works and exploits of the holy men and women of the first centuries of Christianity, as well as those who lived in subsequent times (including the educators of the Slavs, Saints Cyril and Methodius, the baptist of Rus', Saint Vladimir and Equal-to-the-Apostles Princess Olga). The text reproduces lithographic images from the original 1907 edition.