 According to Casting Crowns ' lead singer Mark Hall , the idea for " Who Am I " came while he was driving home with his wife and children one night . Hall , who was having personal worship time during the drive , recounts that he wondered " Who am I to think I can just call up to God whenever I want , from the middle of nowhere , and expect Him to hear me ? " Hall says " immediately I started thinking I 'm a new creation , I 'm more than a <unk> ... I 'm [ also ] grass , that is rises up and is gone in a day " . In an interview , he commented that " me being a <unk> is true , but at the same time I need to understand that my life is a vapor , and me being able to even pray to [ God ] is because of what he 's done for me " . " Who Am I " was produced by Mark A. Miller and Steven Curtis Chapman . It was recorded at <unk> In The Dark Studio in Decatur , Georgia and Zoo Studio in Franklin , Tennessee , and it was engineered by Matt Goldman and Sam Hewitt . 
