Don, what you are proposing is that all of Israel and the Judean Diaspora didn't need the book of
Acts 2. Paul didn't need to go and bother the Greeks in
Acts 17:16–34.
In
Acts 2:5 they were devout Judeans, and Diaspora Judeans.
For you they didn't need to hear Galileans speaking in the languages and dialects of their birth languages. They were already "right living" Jewish people.
Right Don?
So, good "right living" Hindus, Buddhists, Israelis, Muslims, NOI, Wiccans, or just good old atheists. All they really have to do is be good, but good compared to what? Who actually is the judge of this good, or as you put it, "right living?" Don, you sound like a Rabbi, who believes all a Gentile needs to do is keep the Noahide laws, and be a good gentile.