This is worth the read!
http://catholiceducation.org/articles/religion/re0526.htmlI thought this was great:
So right from the first twelve that Jesus himself chose, one was a terrible
traitor. SOMETIMES GOD'S CHOSEN ONES BETRAY HIM. That's a fact that we have to
confront. It's a fact that the early Church confronted. If the scandal caused
by Judas was all the members of the early Church focused on, the Church would
have been finished before it even started to grow. Instead, the Church recognized
that you don't judge something by those who don't live it, but by those who do.