In 1722 a small group of Moravian Christians, who lived in what is now the Czech Republic, found refuge from persecution on the estate of a generous German count. Within four years more than 300 people came. But instead of an ideal community for persecuted refugees, the settlement became filled with discord. Different perspectives on Christianity brought division. What they did next may seem like a small choice, but it launched an incredible revival: They began to focus on what they agreed on rather than on what they disagreed on. The result was unity.

The apostle Paul strongly encouraged the believers…