Tony Campolo tells the story of a black Baptist preacher in the inner city of Philadelphia who preached a sermon Tony says he'll never forget. Tony preached first. He was "hot," so "hot" he says, that he even stopped and listened to himself. He sat down and said to his pastor: "Now see if you can top that one!"

"Son," said the black pastor, "you ain't seen nothin' yet." For an hour and a half the pastor repeated these words over and over again: "It's Friday, but Sunday's a comin'."

"I've never heard anything like it," Tony said. "He just kept saying it. The congregation was spellbound by the power of it."

"It's Friday. Mary, Jesus' mother is crying her eyes out. That's her son up there on the…