Definitely You'll Never Walk Alone. I wanted it at our wedding, but my husband (Liverpool season ticket holder) vetoed it. I REALLY want it at my funeral, but Liverpool supporting kids say it will spoil matches for them in future. So it looks as though I won't ever get it, but to me it tells me that there's someone out there looking out for me.
Anything by Mumford and Son, but especially Sigh No More, The Cave, and Awake My Soul. Oh, and After the Storm.
Keane - Hamburg Song Kate Bush - The Man with a Child in his Eyes. David Bowie - Word on a Wing (which actually is a prayer / 'religious' song, but from a non-religious singer / person. It's very anguished and expressive and speaks volumes).