Well Dahling I guess you never heard that the Jews considered the Gentiles dogs, huh, or that Jews considered Gentiles unholy or unclean? I think maybe you have. That's the whole concept that God used in Peter's vision to wake him up to the idea that maybe Jews shouldn't be considering Non-Jews unclean (unholy).
You know how you know that Gentile isn't a lovely term? Getting "cut off from among my people" was a punishment. When one was cut off and set out of the camp, they were left to wander with the Gentiles. In fact, the children of Israel, were flushed like a toliet into the Gentile lands as a punishment for their sins.
So hangin' with Gentiles was seen as a consequence of bad actions. Let me ask you this, remember when Israel was returning from the diaspora and all the Israeli men who had taken Gentile wives and had children were commanded to divorce them all. Now is that anyway to treat perfectly good Gentiles?
Being a Gentile was so loathed by Israel and subsequently Jews that no one in the whole Bible tries to become a Gentile. LOL!!!
Can you see a good Jew with his payot and tzit tzit scurrying around and saying, "Let's see what must I do to become a gentile? Well I guess the list would look like this: eat some pork chops, work on the Sabbath, ignore God's ways, mingle your worship with false gods. Yep that's a good start."
Maybe the Jews should have begun a conversion class and disciple people into Gentilehood for when Jews were tired of being Jews.
But, of course, I'm just being a little light here.

So seriously,
have you had a chance to read any Josephus? Great source for learning some insight into Jewish thought.
I am avoiding rewriting anything I already wrote in my previous post, so I think that'll do.