Food for thought:
Galatians 4:8 & 9 - Exegesis
This is an early MA piece. Galatians 4:8 and 9 is a very important position in the book where Paul’s argument on the changed role of Jewish law is enhanced…
www.academia.edu
PS: So, while I still don't think Paul's use of στοιχεῖον supports the idea that the Galatians were Epicureans at some point, I *could* entertain that the Galatians were worshipers of the gods of the four "elements of the universe" as this paper entertains. I also continue to think that it could have something to do with adherence to the Law which Paul doesn't think brings salvation (hence it is "weak" and "beggarly"). But I don't think his wording allows for an Epicurean take on the "elements" in any way... At least not at this time.