Do you know any songs by secular artists that have at one time or another really hit you on a spiritual level?  I would love to hear about them.  He's some of my own.

Amos Lee - Black River
This song always calms me down no matter how crappy the situation seems to get.  


Coldplay - Til Kingdom Come
There are obvious Biblical allusions in various Coldplay songs but there is something about this song that I love.

Sorry about the Youtube videos.  They were the only recordings of the songs to which I could find links.