Hi,
You can try finding it using a couple of resource pages that we have on the main website. The MIDI File Directory lists websites that host MIDI files, where you may be able to find a .mid of the song and then use Notation Musician or Notation Composer to get the sheet music (Musician if you like the arrangement, Composer if you want to really change or add anything.)
There is a page for Christian MIDI hosting websites at
http://www.notation.com/MIDI-Christian.php
There is also a MIDI Search Engines page at
http://www.notation.com/MIDI-Search.php
Between the two above, if there is a .mid file of it on the internet, you should be able to find it
Other than that, you can also get PDF scores of songs from places like
www.worshiptogether.com or
www.ccli.com (using the "Song Select" service).
Hope this helps!
Sherry