On June 21, Steve Runge posted a discussion of the placement of the phrase ἐν τῷ ὀνόματί μου in John 16:23 that can serve as a good example of the usefulness of discourse studies in resolving (or clarifying) difficult textual decisions. NA27 and SBLGNT place the phrase in different locations. Take a look at Steve’s discussion and the comments in response to it if you are interested in this topic.
Greek Language and Linguistics
Ancient Greek, mostly Hellenistic