My friend Carrie’s five-year-old daughter, Maija, has an interesting approach to playtime. She loves mixing together dolls from different playsets to come up with a new community. In the world of her imagination, everything belongs together. These are her people. She believes they are happiest when they’re together, despite being different sizes and shapes.

Her creativity reminds me of God’s purpose for the church. On the day of Pentecost, Luke tells us, “Now there were staying in Jerusalem God-fearing Jews from every nation under heaven” (Acts 2:5). Though these people were from different cultures and spoke different languages, the Holy Spirit’s arrival…