Provides basic introduction to the two most common Greek restrictive particles, ἀλλά and ἐὰν μὴ / εἰ μὴ as background for an exposition of Galatians 2:15–16. The blog post associated with the video is http://academicblog.marketing.logos.com/?p=4044. Further discussion and questions about these issues may be found at https://faithlife.com/highdef. 

This is an overview of the Lexham Discourse NT resources, beginning with suggestions for those without any Greek, then moving on to those with some Greek.