 Nagen returned to the US to study at Yeshiva University where he received a bachelor's degree in Judaic studies and a master's degree in Jewish history in addition to rabbinic ordination.In 1993 he moved to Israel and studied at Yeshivat Har Etzion and in 1997 joined the faculty at Yeshivat Otniel.In 2004 Nagen received a doctoral degree in Jewish philosophy at the Hebrew University.