I agree that some merchants most likely were multilinguistic or had those resources available to them. When it came to recording those momentous events that were occurring during those days however, I can only envision they first were written down in their native language for a number of reasons.
>> “I’m pretty sure Paul spoke at least a little Greek, based on Acts 21:37 account of when he was jailed toward the end, and him having somewhat astonished one of the Roman soldiers that he was able to speak Greek.” <<
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Yes, but Paul was at the time, probably the second most educated man in the world (next to Gamaliel).
As a whole, Jews were a very self-centered people (as they remain today).
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