<prompt> Translate the following text to EnglishKatika karne ya 16 ilifikia kilele chake kama kituo cha Kabbalah, aina ya ushirikina wa Kiyahudi, na inajivunia sinagogi 21, seminari, na shule 18.  <response>: In the 16th century it reached its zenith as the centre of Kabbalism, a form of Jewish mysticism, and boasts 21 synagogues, a seminary, and 18 schools. 