James M. Robinson is Professor of Religion Emeritus at Claremont Graduate University. Among his many publications are 'The Gospel of Jesus,' 'The Secrets of Judas,' and 'The Sayings Gospel Q: Collected Essays.' He is also the general editor of 'The Nag Hammadi Library in English' and 'The Coptic Gnostic Library.'

Helmut Koester is John H. Morrison Research Professor of Divinity and Winn Research Professor of Ecclesiastical History at Harvard Divinity School. Among his numerous publications are 'Introduction to the New Testament' and 'Ancient Christian Gospels.' Less