This is a great example from Tim Keller of Redeemer Presbyterian Church in New York City on how to respectfully and truthfully engage cultural questions. Read it from the New York Times link located below.
Christians believe that it is those who admit their weakness and need for a savior who get salvation. If access to God is through the grace of Jesus, then anyone can receive eternal life instantly. This is why “born again” Christianity will always give hope and spread among the “wretched of the earth.”