Rabbi Jill Hammer, PhD, is an author, scholar, ritualist, poet, midrashist, and dreamworker. Rabbi Hammer's books include Undertorah: An Earth-Based Kabbalah of Dreams; Return to the Place: The Magic, Meditation, and Mystery of Sefer Yetzirah; The Hebrew Priestess: Ancient and New Visions of Jewish Women's Spiritual Leadership (with Taya Shere); Siddur haKohanot: A Hebrew Priestess Prayerbook; The Jewish Book of Days: A Companion for All Seasons; Sisters at Sinai: New Tales of Biblical Women; and The Book of Earth and Other Mysteries. She is the cofounder of the Kohenet movement and the Director of Learning and Ritual at Beit Kohenet, a learning and ritual space for recovering, reclaiming, and recreating Jewish spirit wisdom on the margins. Rabbi Hammer is the Director of Spiritual Education at the Academy for Jewish Religion, a pluralistic rabbinical and cantorial seminary. She and her family live in Manhattan.