In the world of dreams the rules of reality do not necessarily apply. Each dream is unique and it's a direct link to the soul and spirit. Psychology provides its own theories on what dreams mean, but so did tradition and the study of dreams for thousands of years before any relevant science had developed.
Dream Meanings - Thief
To dream of a thief (without him entering your house) means that you will hear of things that have been said behind your back and will be upset. If you dream that someone is entering your house to steal, you will enjoy unexpected profits. If you dream that you are stealing then you will suffer great distress.