This fifth volume of New Documents Illustrating Early Christianity is rather different in conception from its predecessors. It focuses on several questions concerning the linguistic analysis of the New Testament, from the particular perspective of the usefulness of the documentary sources for such study. Certain problems canvassed briefly in the previous volumes in the series are here dealt more extensively and notably. Was there a separate Jewish-Greek dialect of the kione? Is the emphasis given by NT Grammars to its Semitic features justified? Can onomastic research aid our understanding of the social level of the early Christians? How adequate for current research is Moulton and Milligan's Vocabulary of the Greek Testament, and other such lexicographical works?