1. Accepting everyone who is “in Christ Jesus” (Galatians 2:4). This includes people from different Christian traditions and cultural/ethnic backgrounds. I have felt more in common with my Christian brothers/sisters in Haiti despite our language/cultural differences than with Americans who aren’t and don’t live as Christians ought.
2. Recognizing that we have different callings (Galatians 2:7). Though Peter and Paul preached the same gospel they recognized there are different ways to go about it. This means we can adapt the gospel to different people while preserving the essence. At the same time we have to be careful not to go as far as losing the gospel for adaptation purposes. That leads to legalism or liberalism that corrupts the gospel.
3. Continuing to remember the poor (Galatians 2:10). Though Peter and Paul went to different mission fields they both felt called to look after the poor. This is a practical way of unifying churches at the local level with shared mission. It’s also a constant in the Bible!