It is a virtue of character, given to those who behave with kindness, courtesy, and politeness. Gentiles are individuals of integrity and good education, they are able to treat people around him correctly: without putting into question the judgment the virtues of others nor distinction of traits that may be peculiar.
In the same way, this is the name with which it is indicated, within Abrahamic monotheistic religions, such as Christianity, Judaism and Islam, those who worship gods who, according to the perspective of each of these, they are false.
Gentle, despite being a term, today, much more related to people who present a courteous and virtuous behavior, throughout history it had a more religious approach. This is evidenced in the large number of variants that have been born from this, and by the interpretation of each religious doctrine.
The Christians, for their part, preferred to call them pagans; For this reason, today paganism is defined as all those beliefs that are different from Christianity, especially if they professed faith for a group of gods.
Gentiles, for the Jewish religion, are called "goy", which can be translated as "nation", referring to those who are not part of the Jewish nation (religion). This has its origin in his call, in the old testament, to separate from other non-Jewish nations.