The house is the body and the whole field of a person's consciousness, and the goodman is the ruling awareness set to keep it. The thief is the sudden intrusion that comes at an unguarded hour, the loss that slips in through inattention when the watch is not kept. Its coming cannot be timed, and that is the point: only a steady wakefulness across every watch of the night keeps the dwelling whole.
The watches are the divisions of the inner night, the stretches of dimmed awareness a person passes through, and it is in the unwatched stretch that the breaking-in happens. What is held within is kept not by knowing the hour but by not sleeping through it.
The house: the body and the whole field of consciousness a person is set to keep
The thief: the sudden intrusion and loss that slips in at the unguarded hour, through inattention
The watch: a division of the inner night, a stretch of dimmed awareness through which a person passes