“Today, after two thousand years, Christianity is the faith, at least nominally, of one-third of the earth’s population. . . . no other person in recorded history has influenced more people in as many conditions over so long a time as Jesus Christ. The shades and tones of his image seem to shift with the needs of men: the Jewish Messiah of the believing remnant, the Wisdom of the Greek apologist, the Cosmic King of the Imperial Church, the Heavenly Logos of the orthodox councils, the World Ruler of the papal courts, the monastic Model of apostolic poverty, the personal Savior of evangelical revivalists” (Bruce L. Shelley, Church History in Plain Language (Rev. ed. by R.L. Hatchett), 517, 521).