In this passage, Paul discusses “The Incident at Antioch.” It comes after the vision that Peter has in which Christ declares all foods clean. It also comes after the Council of Jerusalem made the determination that gentile Christians did not have to become culturally Jewish in order to join the Church.
After this time, per Paul, Peter lived much like a gentile in terms of cultural and ceremonial rules. But when he was with more culturally Jewish Christians, Paul would revert in how he behaved and most importantly how he treated gentile Christians.

For Paul, this was a big deal. The “New Perspective on Paul” movement suggests that much of Paul’s discussion of the “works if the law” are really focused on these cultural identity markers, those “signs of the Covenant” that marked the distinctions between Jews aha Gentiles. For Paul, unity within the church is vital because Jesus came to bring all people to himself and break down those barriers.
But real unity is hard work. It requires more than social media, but real investment in each other, across those barriers of ethnicity and culture. No matter how ‘aware’ you are, you can be called out – just like Peter, but also even in situations where you have the best of intentions.
Unity is hard work because promises get broken, and we can get hurt. The Jerusalem church and Paul agreed to how they would do ministry, but the leaders in Jerusalem backslid on that agreement. Related, leaders will disappoint us.
Unity is hard work because politics and power win the day too often. History is full of the church being co-opted for secular political ends. Peter’s behavior here was simply an early form of this, changing behavior to maintain influence. We see this across the ages of the church and certainly into the present day.
Unity is hard because it counter-intuitively involves conflict. In order to keep unity we must be willing to confront those who would subvert unity.
Unity is hard because it will mean surrendering things. This is one of the reasons Sunday mornings are so segregated – we are not willing to give up our cultural expectations of worship and church in order to come together. These things are not core to our relationship with Christ, but at cling to them because we see them as “markers of the Covenant” much like the leaders Paul came into conflict with.

So in the end the only answer is to love like Christ did, loving across boundaries and against the gradients created by culture and society. The only answer is to do this hard work on unity as we seek to be more like Jesus.
— Sermon Notes, Dave Sim, Renew Church, Lynnwood WA, September 29, 2024