The account traces the missionary journeys, martyrdoms, and burials of the apostles. Peter preaches through Pontus, Galatia, and Italy before being crucified head downward in Rome under Nero; Andrew evangelizes Scythia and Thrace and dies at Patrae; John serves in Asia, is exiled to Patmos under Domitian, writes his Gospel there, and dies at Ephesus. James, Philip, Bartholomew, Matthew, Thomas, James son of Alphaeus, Jude, Simon, and Matthias are assigned distinct preaching fields and deaths, including execution by sword, crucifixion, stoning, and spearing in Judea, Phrygia, India, Parthia, Persia, Jerusalem, and other regions.

Paul begins his ministry after Christ’s Ascension and spends thirty-five years preaching as far as Illyricum, Italy, and Spain before being beheaded and buried in Rome. A concluding catalogue names the seventy disciples commissioned by Christ, identifies their episcopal missions, and recalls that some who initially struggled with his teaching were restored and became faithful preachers. Several disciples are said to have suffered martyrdom, making apostolic mission inseparable from perseverance and witness unto death.