Sefer Daniel; Opportunity in Exile is a 21st-commentary on the Book of Daniel by Rabbi Chaim Jachter, rabbi of Congregation Shaarei Orah in Teaneck, New Jersey and Judaic Studies teacher at Torah Academy of Bergen County (TABC). The commentary is guided by Rav Ya’akov Medan’s book entitled “Daniel: Galut V’Hitgalut,” and incorporates questions and insights from Rabbi Jachter’s students at TABC.