The Essenes (in Modern but not in Ancient Hebrew: , "Isiyim"; Greek: Εσσηνοι, Εσσαιοι, or Οσσαιοι; "Essēnoi", "Essaioi", or "Ossaioi") were a Jewish sect that flourished from the 2nd century BC to AD 100 which some scholars claim seceded from the Zadokite priests. Being much fewer in number than the Pharisees and the Sadducees (the other two major sects at the time), the Essenes lived in various cities but congregated in communal life dedicated to asceticism, voluntary poverty, daily immersion (in mikvah), and abstinence from worldly pleasures, including (for some groups) marriage. Many separate but related religious groups of that era shared similar mystic, eschatological, messianic, and ascetic beliefs. These groups are collectively referred to by various scholars as the "Essenes". Josephus records that Essenes existed in large numbers, and thousands lived throughout Roman Judaea.