No, I don't remember seeing it, but I did an "Ask Jeeves" search, and found the following:
203. Billy Graham Show (edit)
First aired: 9/24/1963
Writer:
Director:
Guest star: Billy Graham (Himself)
Season opener. Don, Jack and Dennis do the commercial as Peter, Paul and Mary. At Billy Graham's request, the skit is redone according to a new formula in which there are no insults to anyone, and everyone is quiet and sweet; Dennis reports that he went to UCLA over the summer. Billy Graham gives a short inspirational message.
The URL was so long, I couldn't copy and paste it, so had to copy the synopsis of the skit.