We call it "a fall from grace": a Christian man or woman caught in some type of sexual, financial, legal or other ethical or moral indiscretion who falls from a position of high esteem. The most recent example involves Ted Haggard, founder and former senior pastor of New Life Church and former president of the National Association of Evangelicals (NAE).link
Have you ever wondered where that phrase, "a fall from grace," comes from? Galatians 5:4, "You have become estranged from Christ, you who attempt to be justified by law; you have fallen from grace" (NKJV).
It seems like we can't get enough grace and we definitely can't give enough grace.