Thoreau makes an allusion (historical reference) to Christ, Copernicus, Luther, Washington and Franklin. What is the point of his allusion?

In terms of Washington and Franklin, Thoreau's allusion speaks to the bravery and courage of the Founders.... their purpose, their spirit, and their willingness to act. In doing this, Thoreau is making a criticism of some of his peers.... noting they are like children in their innocence and lack of spirit.

Why does Thoreau mention Christ, Copernicus, Luther, Washington, and Franklin?