Are you an Insider or Outsider?

When Christ teaches the crowds he does not care about one's genealogy. This means that one is not necessarily disqualified or qualified to follow Christ because they are child of Abraham. However, this is also true for the gentiles. Christ calls the crowd to be insiders of the kingdom whether they are a literal child of Abraham or a gentile. This leads to the logical question: how do I know if I am an insider?