Shared ground
Paul describes a real conflict, not a minor misunderstanding. In Antioch, Peter (Cephas) had been sharing meals with Gentile believers, then stopped when visitors arrived “from James.” Paul reads that shift as blameworthy and confronts Peter publicly. The main issue is table fellowship: eating together signaled full acceptance and equal standing.
The text also presents the episode as contagious. Peter’s withdrawal influences other Jewish believers, and even Barnabas follows. Paul calls the behavior “hypocrisy,” meaning there is a mismatch between their earlier practice (eating together) and their later public stance (separating).
Where interpretation differs
Who the visitors were and what they represented. Some think “from James” means official delegates carrying Jerusalem’s expectations; others think they were connected to James in some looser way (using his name or coming from his circle) without speaking for him.
What kind of pressure Paul means by “compel.” Some read Paul as pointing to direct demands placed on Gentiles (explicit rules for shared meals). Others read “compel” as indirect social pressure: once a key leader withdraws, Gentiles are effectively treated as second-tier unless they adopt Jewish boundary practices.
How to size up Peter’s fear and Paul’s charge of hypocrisy. Some interpret Peter’s motive mainly as fear of criticism and loss of reputation among strict observers; others think Peter feared broader conflict in the community. In either case, Paul treats the result as a public inconsistency that communicates the wrong message.
Why the disagreement exists
Paul’s narrative is brief. He names the trigger (“from James”) and the pressure group (“those of the circumcision”) but does not spell out their exact authority or demands. He also reports his conclusion (“compel the Gentiles to live like Jews”) without detailing the mechanics of that compulsion, leaving room for different reconstructions.
What this passage clearly contributes
Explicitly, the passage shows that leadership actions can teach, even without words: Peter’s change at the table created a community signal that Paul says was “not…according to the truth of the gospel.” Theologically (by inference from Paul’s stated logic), Paul connects the gospel to equal table fellowship across Jew/Gentile lines, and he treats withdrawal as functionally pressuring Gentiles toward Jewish identity practices to gain full acceptance. The episode also sets up Paul’s broader argument that follows about how Gentiles relate to Jewish practices and what it means to live consistently with the gospel (see Galatians 2:15–21).