Those who demand circumcision are saying, “God wants you to be a Son of Abraham!”
“That’s true,” Paul replies. “But which son?”

Paul relates how he visited the bigwigs in Jerusalem, and then had to rebuke one of them. Is the Gospel really all about eating and drinking and body modification, or is there something deeper going on?

Paul gets into the meat of his message: God’s law is great, God’s law is good, but it could never transform you into God’s child. So why oh why are you trying to use it that way now?