Here is an academic study of the passage which addresses the "faith alone vs faith + works" debate. This is intense scholarly study, not a "Sunday Sermon". It is necessary to parse grammar and get in the head of those who lived in ancient times in order to properly interpret what they wrote and what they were trying to convey.

Backgrounding Galatians 2:16
The rest of the series is here.
Backgrounding Galatians 2:16
The rest of the series is here.