Lincoln feels that the nation should keep fighting the Civil War and not let the soldiers, who died for freedom, die in vain.
Explanation:
"The Gettysburg Address" is a speech delivered by President Abraham Lincoln on November 19, 1863. It was a ceremony for the dedication of the National Cemetery of Gettysburg, Pennsylvania.
The speech was delivered on the face of the Civil War. By addressing his audience and remembering the death of soldiers, he remarks that let not the death of soldiers go vain. By saying this he is encouraging his audience to keep fighting for the freedom, for which soldiers laid their lives.
"that this nation, under God, shall have a new birth of freedom—and that government of the people, by the people, for the people, shall not perish from the earth.” (Textual evidence)