Rabbi Metzger completed his rabbinic studies at the Kerem Be-Yavne hesder yeshiva and continued to teach in yeshiva and in schools. He served as rabbi of the Tiferet Zvi Synagogue in Tel-Aviv and was later appointed regional rabbi of northern Tel-Aviv. He published several books, two of which were awarded prizes by the President of Israel.
In 2003, Rabbi Yona Metzger was appointed Ashkenazi Chief Rabbi of Israel, a position he held until 2013.
Sources: Ministry of Foreign Affairs