Asking “Whose filthy, wet, snowy boots were left on the hall floor?” was not a request for information, it was meant to provoke a confession by the culprit. Much like God asked “Where art thou?” in the Garden after Adam & Eve had sinned. God knew good & well where Adam was, but He wanted him to own up to his sin. Once a person confesses. “Yeah, I am the one who did wrong,” he or she is well on their way to being responsible enough not to do it again.