Written by You wake with the residue of somewhere else on you.
A face you haven't thought of in years. A house you don't recognize but felt entirely at home in. A conversation that had no sound but left you with a feeling so specific - grief, or relief, or the particular weight of being told something important - that you carry it into the morning without knowing what you were told.
Most people call this dreaming and move on.
Practitioners call it something else.
The dream state is the most consistent and accessible channel through which the spirit world communicates with us. Not because sleep is magical in itself, but because sleep is the one time when the rational, filtering, categorising mind relaxes its grip long enough for the deeper layers of communication to get through. The signals that your waking mind explains away before they reach consciousness, the subtle impressions, the peripheral presences, the symbolic information that operates below the frequency of ordinary thought, these have full access to you when you're asleep.