What does "god in heaven" mean?
Native speaker’s answer
Rebecca
Here, "God in heaven" is an exclamation, similar to "Oh my God". He's expressing his surprise. More literally, "God in heaven" refers to a God located in heaven. Alternatively, it could be used to address "God" formally in a prayer. Ex: God in heaven, Tony. Will you please shut up! Ex: God in heaven! I'm late for my interview.