But let justice roll on like a river, righteousness like a never-failing stream! Amos 5:24

Among the many exhibits and artifacts exploring the harsh reality of slavery and its aftermath in the National Museum of African American History and Culture in Washington DC, I was grateful to discover the Contemplative Court. This tranquil room features translucent walls of bronze glass, and water appears to rain down from the ceiling into a pool.

As I sat in that peaceful space, a quote on the wall from Dr. Martin Luther King Jr. caught my eye: “We are determined . . . to work and fight until justice rains down like water and righteousness like a mighty stream.” These powerful words are drawn from the Old Testament book of Amos.

Amos was a prophet living among a people who were involved in religious activities, such as celebrating festivals and offering sacrifices, but whose…