Hour three explores how religion suffused the Civil War. As slavery split the nation in two, Northern abolitionists and Southern slaveholders turned to the Bible to support their cause. Former slave and abolitionist Frederick Douglass condemned Christianity for sanctioning slavery. In the White House, Abraham Lincoln struggled to make sense of the war’s carnage and the death of his young son. The president, who previously had put his faith in reason over revelation, embarked on a spiritual journey that transformed his ideas about God and the ultimate meaning of the war.