I agree that many times it is how the song is sung, and the intent behind the song. Look at these two songs.
Here is the radio version:
http://www.youtube.com/watch?v=GEPEYphZk8s
And now look at the difference with the accoustic version... people sitting around in a peaceful sort of way... perhaps pensively considering the words of the song.
http://www.youtube.com/watch?v=pSVBQByfTvU
IMHO, a very big difference. The radio version is geared for just that... the second version is geared for church worship. I have been in a service where he sang it, and it is definetely a "worship" song.
BUT, on topic of this post. Anytime you change the map... as in change the map of someone's reality... it is tough. You are showing them truth, and when you have been taught that the world is flat... well, it is still hard to believe, even when the map now shows you have a whole new world discovered.
This is why, if we seek TRUTH, we will find God.... and expand our maps.