Kittel and TDNT
Benjamin Myers praises Kittel's TDNT as a work of finest scholarship. I think some serious qualifications should always be made when mentioning this work. I agree that there are some useful reference articles. Yet most disturbingly some of the early reference articles are pretty anti-Jewish and some written by known antisemites. Kittel himself was a known Nazi supporter and he of all people wrote the article on Ioudaios if I remember rightly. And Grundmann, a Nazi party member and supporting member of the SS, was also an assistant in the TDNT project. In both these cases it is not so difficult to see how their racist ideology profoundly interfered with their academic work.
For all the details see e.g.:
G. Vermes, Jesus and the World of Judaism (1983).
S. Heschel, 'Nazifying Christian Theology: Walter Grundmann and the Institute for the Study and Eradication of Jewish Influenceon German Church Life', Church History 63 (1994), pp. 587-605.
M. Casey, 'Some Anti-Semitic Assumptions in the TDNT', NovT 41 (1999), pp. 280-291 and 'Who's Afraid of Jesus Christ?' in Crossley and Karner (eds.), Writing History, Constructing Religion, pp. 129-146 (an innocent plug, honest).
P. Head, 'The Nazi Quest for an Ayrian Jesus', JSHJ 2 (2004), pp. 55-89.