Witness: what your word says about who you are right now
Things become real in your presence. That is the job, and it costs more than it looks.
The old word means one who knows, from the same root as wit. Not one who watches. One who knows. When Witness is your word, you are the person in whose presence things become real. People tell you what they have told no one, not because you ask, but because being seen by you counts in a way being seen by others does not. A grief spoken to you is finally grieved. A hope said out loud to you is finally owned. You hold the record of the people you love: their turnings, their almosts, the versions of themselves they shed. That is a sacred job and a heavy one, because a witness cannot look away without the thing unseen sliding back into unreality. You have carried other people's testimony so long you sometimes forget you are allowed to give your own. That is the quiet cost. Everyone becomes real in your gaze, and you wonder who is holding the record of you. The word is not asking you to stop seeing. It could not if it tried. It is asking you to let one or two people all the way in, so the one who makes everything real gets to be real too.
Underneath witness, the reading most often finds the Saint rhythm, the pattern moving under the behavior.