Mark S. Kinzer, PhD, is a theologian, New Testament scholar, and rabbi within the Messianic Jewish movement. He is the Founding Moderator of Yachad BeYeshua, a global ecumenical fellowship of Jewish disciples of Jesus, and President Emeritus of Messianic Jewish Theological Institute. He is also a founding member of the Roman Catholic – Messianic Jewish Study Group, which was established in 2000 under the auspices of Pope John Paul II. His writings focus on Jewish-Christian relations, Christology, ecclesiology, and eschatology.