My friend Matt Hyde lives in Boise, Idaho, a city that is 89 percent white. After he became the pastor of Discovery Church in 2013, he learned that refugees from many countries were living in Boise. They are from Bosnia, Serbia, Eritrea, Ethiopia, Nepal, Bhutan, Iraq, Iran, Afghanistan, Congo, Togo and Sudan.
Most of them had fled political oppression or civil war. Many spent time in crude refugee camps before they were granted permission to move to the United States. Almost all of them endured unbelievable trauma.
These refugees have changed Hyde's life-and his entire congregation. Today some...