In general this song is talking about when someone in life is going through hard times and its to much to bare. Example "Your life fell apart in your hands, and you've got the scars to prove it. It's not the first time, and they're getting deeper." Not necessarily talking about cutting yourself but the scars of emotions and tragic events that someone may go through. When they say "Pull it together.Button up your shirt.Roll down those sleeves.Don't let them see how you've coped." They are talking about get yourself together and relax. And lastly they talk about friendship and how they will always be there for you thus this qoute "But don't turn your back on the strongest crutch you've ever had.They have always been there to brace your fall." Not necessarily a song about Jesus but a good song about having a hard time in life.