content: Gab.ai is owned by jews "Gabbai" is a hebrew word.  A gabbai (Hebrew: גבאי), also known as shamash שמש (sometimes spelled shamas) or parnas or warden (UK, similar to churchwarden) is a beadle or sexton, a person who assists in the running of synagogue services in some way. The role may be undertaken on a voluntary or paid basis. A shamash (literally 'servant') or gabbai can also mean an assistant to a rabbi (particularly the secretary or ...