Vridar comments onCarrier's first 10 elements (
Ten Elements of Christian Origin):
1. The earliest form of Christianity definitely known to us originated as a Jewish sect in the region of Syria-Palestine in the early first century CE. (pp. 65-6)
2. When Christianity began Judaism was highly sectarian and diverse. (p. 66)
3. (a) When Christianity began, many Jews had long been expecting a messiah: a divinely chosen leader or saviour anointed . . . to help usher in God’s supernatural kingdom, usually (but not always) by subjugating or destroying the enemies of the Jews and establishing an eternal paradise.
(b) If these enemies were spiritual powers the messianic victory would have been spiritual; or both, as in the Enochic literature.
(c) Jewish messianic expectations were widespread, influential and very diverse. (pp. 66-7)
4. (a) Palestine in the early first century CE was experiencing a rash of messianism. There was an evident clamoring of sects and individuals to announce they had found the messiah.
(b) Christianity’s emergence at this time was therefore no accident. It was part of the zeitgeist.
(c) Christianity’s long-term success may have been simply a product of natural selection. (pp. 67-73)
5. Even before Christianity arose some Jews expected one of their messiahs heralding the end-times would be killed before the final victory. (pp. 73-81)
6. The suffering-and-dying servant of Isaiah 52-53 and the messiah of Daniel 9 have numerous logical connections with the “Jesus/Joshua Rising” figure in Zechariah 3 and 6. (pp. 81-83)
7. (a) The pre-Christian book of Daniel was a key messianic text, laying out what would happen and when, partly inspiring much of the messianic fervour of the age.
(b) The text was widely known and widely influential, widely regarded as scripture by early Christians. (pp. 83-87)
8. (a) Many messianic Jewish sects were searching the (Hebrew and Greek) scriptures for secret messages.
(b) It follows that the Jews who became the first Christians had been searching the scriptures this way this long before they became Christians. (pp. 87-88)
9. The early first century concept of scriptures embraced not only writings that became canonized but many more works, many of which no longer exist; further, of those that do still exist, including canonical texts, the early first century versions were sometimes quite different in details. Texts in places were been modified, changed, before their canonical versions were finally settled. (p. 88-92)
10. Christianity began as a Jewish messianic cult preaching a spiritually victorious messiah. (pp. 92-96)
I should note I promoted the flip side of your question some time ago: Given all the possible candidates for a possible founder already out there that other Cargo Cults used (Johnson and Roosevelt for example) why did the natives of Tanna 'create' this John Frum character?
The same can be asked of the Luddites. Given how many people of that time felt their jobs were threatened by the new technology why was this need to create Ned Ludd rather then using some actual worker that lashed out?
Carrier touches on this very early on in OHJ: to help provide a focus of what were original various diverse but similar minded groups. In essence this mythical leader became a flag to rally around. The examples he gives are John Frum, Ned Ludd, and interestingly King Arthur.
Price called the Christ Jesus "a synthetic construct of theologians, a symbolic "Uncle Sam". That comparison to Uncle Sam is key because despite the legend we know that Uncle Sam was NOT based on Samuel Wilson who became well known during the War of 1812 (March 24, 1810 journal entry by Isaac Mayo makes a reference to Uncle Sam as a name of the United States). So we know Samuel Wilson was plugged into and already existing Uncle Sam mythos which itself was a variation of the older "Brother Jonathan" mythology