Listened on Audible (Included). Best teaching on Galatians I’ve come across so far. Best point: If Paul made the important distinction in the earlier section of Galatians 3 regarding “Seed” (Christ) vs. “seeds”, then Galatians 3:26 shouldn’t be translated “children” but “sons” (Greek is the masculine plural noun). All believers (see verse 28, which eliminates distinctions:slave/free, male/female, etc) have the same rights as the firstborn Son, the Seed.
Paul’s illness has something to do with his eyes. They would’ve torn out their eyes to give to him (4:15), he referred to writing in “big letters” (6:11: thus, poor eyesight).
A very good overview of the book of Galatians - he doesn't go too in depth of the whole book, but does elaborate on key passages and also gives historical context.