City upon a Hill

A City upon a Hill is a phrase from the Salt and Light in Jesus's Sermon on the Mount. In Matthew 5:14, he tells his listeners, "You are the light of the world. A city that is set on a hill cannot be hidden." It has become popular with American politicians.
President Ronald Reagan used the image as well, in his 1984 acceptance of the Republican Party nomination and in his January 11, 1989, farewell speech to the nation: