Matthew 21:31b-32

Jesus said to them, “Truly I tell you, the tax collectors and the prostitutes are entering the kingdom of God ahead of you. For John came to you to show you the way of righteousness, and you did not believe him, but the tax collectors and the prostitutes did. And even after you saw this, you did not repent and believe him.

One of the things that we have to glean from this passage is that the Kingdom of God will probably not be a socially sanitized place. Heaven will be filled with people that are considered undesirable on this earth. Jesus was making this point to religious leaders; for religious adherence creates blindness to the reality that we are all sinners in the eyes of God, and in need of a Savior.