Interesting theory - but - as for the Jews plagiarizing the Greeks, ahem, maybe it was the other way around? There was a great deal of cross cultural influence even then. And, powerful nations like Egypt, Babylon and Persia, the Hittites, the Phoenicians were highly significant as well.

“Western civilization” has given the Greeks a great deal of credit and often doesn’t even look at the other nations who were actually much older than Greece, and in the case of several, far more powerful.