The ancients figured it out people will be very stupid in the future. They've designed a story using mnemonic techniques so that the good news will be able to travel even if the most readers would take the words literally or wouldn't believe a word of it. It pays out even if 1 in 10,000 manage to decipher the metaphors and rebuild the Temple by themselves aka rewire their brain according to the hidden meaning of the Bible. Each at their own pace tho.

Galatians 4:24
Which things are an allegory