Having years of experience I have found that MOST of those are all made up, or sourced from other speeches given by NON JW sources. I have my self looked for good stories from websites that have them, or for sermons given by ministers, or the many books of quotes and anecdotes that are out there.
What I have found is that the ones the sound the most amazing are usually completely BS.
A CO gave one where the gist was - a daughter disobeyed her parents and went out at night without her parents knowing about it - they thought she was missing and the dad went out to find her - then he got into an accident - his car hit another one and guess what - his daughter was in it and she died.
Boo Hoo - BullShit made up crap.