I have been reading The History of the Decline and Fall of the Roman Empire, by Edward Gibbon, the Folio Society edition, and recently read this wonderful description of the formative roots of the Church.
“From the beginning of the world an uninterrupted series of predictions had announced and prepared the long-expected coming of the Messiah, who, in compliance with the gross apprehensions of the Jews, had been more frequently represented under the character of a King and Conqueror, than under that of a Prophet, a Martyr, and the Son of God. By his expiatory sacrifice the imperfect sacrifices of the temple were at once consummated and abolished. The ceremonial law, which consisted only of types and figures, was succeeded by a pure and spiritual worship, equally adopted to all climates, as well as to every condition of mankind; and to the initiation of blood, was substituted a more harmless initiation of water. The promise of divine favour, instead of being partially confined to the posterity of Abraham, was universally proposed to the freeman and the slave, to the Greek and to the barbarian, to the Jew and to the Gentile. Every privilege that could raise the proselyte from earth to heaven, that could exalt his devotion, secure his happiness, or even gratify that secret pride which, under the semblance of devotion, insinuates itself into the human heart, was still reserved for the members of the Christian Church; but at the same time all mankind was permitted, and even solicited, to accept the glorious distinction, which was not only proffered as a favour, but imposed as an obligation. It became the most sacred duty of a new convert to diffuse among his friends and relations the inestimable blessing which he had received, and to warn them against a refusal that would be severely punished as a criminal disobedience to the will of a benevolent but all-powerful Deity. (Volume II, p. 97)