God in America: A Nation Reborn (3) and A New Light (4): During the 19th century, the forces of modernity challenged traditional faith and drove a wedge between liberal and conservative believers. "A Nation Reborn" explores slavery, and how it splits the nation as abolitionists and slaveholders find justification in the Bible. Frederick Douglass condemns Christianity; President Lincoln struggles to make sense of the war's carnage and the death of his young son. Lincoln, who previously had favored reason over revelation, embarks on a spiritual journey that transforms his ideas about God and the Civil War's ultimate meaning. "A New Light" explores the intellectual and cultural conflicts between traditional religious beliefs and the forces of modernity, which reached a crescendo in the 1925 trial of John Scopes, a Tennessee teacher arrested for teaching evolution.