My last attempt

superchuck500 said

Isn’t nearly all of the end-times prophesy from Old Testament and pre-Jesus writings?

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A lot of it does come from the OT, much of it written while "god's chosen people" were trying to rationalize why they were living under the yoke of the Persians, then Greeks and later the Romans. But the authors of the books of the NT were definitely inspired and influenced by their interpretations of the Hebrew scriptures (Daniel, for example) about the coming end of the world.

In simple terms (per the book of Hebrews), the cosmic significance of the sacrifice of Jesus is that god-blood is more powerful than animal blood for the cleansing of sin, and once sin of the world has been cleansed then the world can end and the chosen/saved can ascend to heaven. So in that sense the whole point of the NT is to spread the gospel ("good news") that the end of the world is upon us. Yay?