I CAN DO NO LESS
One day a man in the Army was reading his instructions from the General about what he was to do that day. Now the General of the Army was highly respected and loved. Someone happened to walk by and asked, "What are you reading?" The man answered, "I’m reading my instructions from the General. I need to know what he’d like me to do today." The other man said, "Why should you care what he thinks? What does it matter to him what you do?" The man answered, "But you’re not in the Army. You’ve never met the General. When you read these you might feel you can do nothing. When I read them, I can do no less."
It means to respond to God the same way He responds to us. It’s an attitude that says that to live for Christ - nothing more, nothing less, nothing else.