YOu are talking about the gospels as if they are something they are not. Fundamentalists say what whatever will support their beliefs. I am interested in what historians in the field have to say.
To that effect the gospels are anonymous, not eyewitnesses, and the up to 90% of verbatim Greek copied into other gospels (the synoptic problem) we know the source gospel was Mark. So that's just one source.
The model for dying/rising savior demigods was already created and being used in most religions in the region. The author of Mark was highly educated and uses all literary styles and narratives that writers use when composing fiction. There was already a prophecy in the OT to follow and write a story that fulfills it.
Triadic ring structure and other devices are used, that is only used in fiction. The author also is taking narratives from the OT and transforming them into new stories about Jesus. Clearly fiction.
The idea that it's a "conspiracy of lies" isn't accurate. You know Lord Krishna, the Mormon angel Moroni or the Islamic angel Gabrielle or countless other religions are not conspiracy of lies. They are myth, using made-up divinities to explain wisdom, laws and teach lessons. They are all obviously not real but to say they are a conspiracy of lies would be to say every singe myth from every nation across all humanity was a conspiracy of lies. What it is, is that Christianity is just like all the others, made up by people. With intention of modernizing a religion that needs upgrading.
This blog post explains some of the ways we know it's myth writing:
The Gospels as Allegorical Myth, Part I of 4: Mark
"Only a few verses later, we read about the rest of the crucifixion narrative and find a link (a literary source) with the Book of Psalms in the Old Testament (OT):
Mark 15.24: “They part his garments among them, casting lots upon them.”
Psalm 22:18: “They part my garments among them, and cast lots upon them.”
Mark 15.29-31: “And those who passed by blasphemed him, shaking their heads and saying, ‘…Save yourself…’ and mocked him, saying ‘He who saved others cannot save himself!’ ”
Psalm 22.7-8: “All those who see me mock me and give me lip, shaking their head, saying ‘He expected the lord to protect him, so let the lord save him if he likes.’ ”
Mark 15.34: “My God, my God, why have you forsaken me?”
Psalm 22.1: “My God, my God, why have you forsaken me?”
On top of these links, Mark also appears to have used
Psalm 69,
Amos 8.9, and some elements of
Isaiah 53,
Zechariah 9-14, and
Wisdom 2 as sources for his narratives. So we can see yet a few more elements of myth in the latter part of this Gospel, with Mark using other scriptural sources as needed for his story, whether to “fulfill” what he believed to be prophecy or for some other reason."