Forthcoming. “Allogenes, the Stranger – The Book of Allogenes.” Pages xxx in Brill Encyclopedia of Early Christianity. Edited by P. van Geest et al. Leiden: Brill. [check]
2013. “The Love commandment in the Synoptic Gospels and in the Johannine Literature.” Pages 535-540 in Dictionary of Jesus and the Gospel. New Edition. Edited by J. Green, J. Brown, and N. Perrin. The IVP Bible Dictionary Series. Downers Grove, IL: Intervarsity Press.
2012. “The Gospel of Thomas within Early Christian History: A Theological Appreciation and Discussion.” Pages 609-625, in Beyond Biblical Theology. Edited by H. Assel, S. Beyerle, and C. Böttrich. WUNT 295. Tubingen: Mohr.
2012. “The Gnostic Protology Myth.” Pages 55-56 in The Gnostic Movement: Contributions of the International Symposion in Barcelona, 11-13. Mai 2011. Revista Catalana de Teologia 37.1. Edited by A. Puig i Tarrech. Barcelona. See here.
2008. “The Image Character of Human Existence: GThom 83 and GThom 84 as Core Texts of the Anthropology of the Gospel of Thomas.” Pages 413-431 in Das Thomasevangelium: Entstehung – Rezeption – Theologie. Edited by J. Frey, E. E. Popkes and J. Schröter. BZNW 157. Berlin: Walter de Gruyter.
2007. “The Love of God for the World and the Handing Over (‘Dahingabe’) of his Son. Comments on the Tradition-Historical Background and the Theological Function of John 3,16 in the Overall Context of Johannine Theology.” Pages 609-623 in The Death of Jesus in the Fourth Gospel. Edited by G. Van Belle. Bibliotheca Ephemeridum theologicarum Lovaniensium 200. Leuven: Peeters.
2006. “About the Differing Approach to a Theological Heritage: Comments on the Relationship between Qumran, the Gospel of John and the Gospel of Thomas.” Pages 271-309 in The Bible and the Dead Sea Scrolls. Vol. III: Qumran and Christian Origins. Edited by J. Charlesworth u. a. Waco, Tex: Baylor University Press.