The Jewish leaders that interpret God's will are called Mashiach.
The Kohenim (priests), however, they weren't leaders of the Jewish people, they were in charge of the Temple.
A Jewish "leader" is a Rabbi which means teacher.
The perform the wedding ceremony.
Israel
The Jewish leaders whom you're asking about are called Rabbis. Each Rabbi may lead a synagogue (Jewish place of prayer) and/or a Jewish community.
The Rabbis and sages. See also:Important Jewish leaders, prophets and rabbis
Places of worship: synagogues. Leaders: rabbis.
The leaders of Judaism are Rabbis. The followers of Judaism are the Jewish people.
Ech and Ach
Albert Einstein
The Pharisees which were Jewish religious leaders