What is so amazing about Amazing Grace is that it describes wonderfully the transforming power of God. Once you put your faith in Him*, He goes about making incredible changed in your life. The power of that redemption is a gift - i.e., grace. "Saved by grace" is the phrase. It describes the life (true account) of a wretched man whose heart is transformed when he begins to believe in the Lord. He was a pirate, slaver, mutineer, thief, fraud, and a number of other things. His own crew mutineed against him (on a stolen ship- so saying it was 'his own crew' is a little strong), trussed him up and put him in the cargo hold with the slaves, and left him there for several trips. But before they put him in the hold, they put out both his eyes. Then, when they remembered he was there, they abandoned him on an island where he had to defend for himself, scurvy, covered in sores, blind, and weak. He at some point came to the realization that living life on his terms wasn't getting him anywhere. Then he remembered the hymns his mother used to sing, and remembered what his mother had taught him about Jesus and put his faith there. He was rescued shortly after and returned to health and home (but still blinded). Knowing the history puts some real meaning into the song "was blind, but now I see" "saved a wretch like me" etc.
As far as why the song gets played at cop funerals, I don't know. Maybe because the song usually used is the Scots Highland bagpipe version, a lot of American cops have Irish heritage, and movie writers don't know the difference between Scots and Irish. That's my wild guess about it's use. But it is absolutely my favorite hymn by a long, long distance, so I hope I at least partially answered the "what's so special about Amazing Grace" some.
- Zurf
* Masculine gender used for grammatic purposes only. I am not attempting to ascribe a sex to God.
Granted B chord amnesty by King of the Mutants (Long live the king).
If it comes from the heart and you add a few beers... it'll be awesome! - Mekidsmom
When in doubt ... hats. - B.G. Dude