Joseph Arthur's "In the Sun"
I heard this song during a Scrubs rerun on Comedy Central, and I couldn't get it out of my head. I wish I could say I don't like sappy, religious songs, but it just isn't true. I listen to the Sufjan Stevens album Seven Swans all the time, and it has tons of Christian allegories and metaphors. And probably my favorite song of all time is "O Holy Night," a Christmas song that never gets tired in my ears.