Saying hello and goodbye in the 14th century...

de bene esse: literally, of well-being, morally acceptable but subject to future validation or exception

http://www.medievalists.net/2014/02/06/rituals-of-greeting-and-farewell-reflections-on-a-visit-to-the-royal-court-of-norway-in-1302/

Rituals of Greeting and Farewell: Reflections on a Visit to the Royal Court of Norway in 1302 -...

medievalists.net

An account of reception and farewell rituals at the royal court of Norway in 1302 is described in detail and analyzed through the use of ritual studies.