So mote it be: the oldest Masonic amen
So mote it be means so may it be, using mote, an Old English form of may that was already archaic by the later Middle Ages. It closes the Regius Manuscript, the oldest known Masonic document, dated to about 1390, and it still ends prayers in lodge ritual. The phrase later spread beyond Masonry into modern Wiccan and neo-pagan practice, which borrowed it in the twentieth century.