If the appointment of the Seventy indicated our Lord's intention of sending the glad tidings of salvation to the ends of the earth, there was a peculiar propriety in the selection of an individual of their number as the historian of the earliest missionary triumphs. Whilst Luke records the wonderful success of Christianity amongst the Gentiles, he takes care to point out the peculiar features of the new economy; and thus it is that his narrative abounds with passages in which the doctrine, polity, and worship of the primitive disciples are illustrated or explained. It is well known that the titles of the several parts of the New Testament were prefixed to them, not by their authors, but at a subsequent period by parties who had no claim to inspiration; [179:4] and it is obvious that the book called--"The Acts of the Apostles" has not been very correctly designated. It is confined almost exclusively to the acts of Peter and Paul, and it sketches only a portion of their proceedings. As its narrative terminates at the end of Paul's second year's imprisonment at Rome, it was probably written about that period. Superficial readers may object to its information as curt and fragmentary; but the careful investigator will discover that it marks with great distinctness the most important stages in the early development of the Church. [180:1] It shews how Christianity spread rapidly among the Jews from the day of Pentecost to the martyrdom of Stephen; it points out how it then took root among the Gentiles; and it continues to trace its dissemination from Judea westwards, until it was firmly planted by the apostle of the uncircumcision in the metropolis of the Empire.