He was indicating that the Civil War had a purpose and that was to preserve the union of the United States. To do this, the North had to win the war. Otherwise, the death of the soldiers would be in vain. (Ending slavery was a also a secondary purpose)
To encourage feelings of responsibility to continue fighting for the cause.
1. "in vain" means without reason. "shall not have died in vain" is a phrase from the Gettysburg Address where Lincoln was dedicating a cemetery. "That these dead shall not have died in vain" meant that the Union soldiers who died at Gettysburg would have died for a noble purpose if the North won and the Union stayed together. "shall not have died to no purpose" in other words. 2. shouldn't have died in anger
1. "in vain" means without reason. "shall not have died in vain" is a phrase from the Gettysburg Address where Lincoln was dedicating a cemetery. "That these dead shall not have died in vain" meant that the Union soldiers who died at Gettysburg would have died for a noble purpose if the North won and the Union stayed together. "shall not have died to no purpose" in other words. 2. shouldn't have died in anger
The phrase "cut off" in the Bible refers to dead or killed. The expectation of the righteous is that God will preserve them and they shall never be dead eternally.
It means powerless or dead.
The phrase "had been all but dead" means that the creature involved had been extremely close to death, and was nearly dead.
The idiom is "dead certainty". It means it's in the bag = this is a dead certainty = this is cinch
The "dead" of winter means the very middle, where everything seems cold and dead.
".... It is rather for us to be here dedicated to the great task remaining before us - that from these honored dead we take increased devotion to that cause for which they gave the last full measure of devotion - that we here highly resolve that these dead shall not have died in vain - 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. ......"Gettysburg AddressbyAbraham Lincoln, President of the USANovember 1863
He asks people to keep fighting so "that these dead shall not have died in vain" - APEX
Uccello morto is an Italian equivalent of the English phrase "dead bird."Specifically, the masculine noun uccello means "bird." The masculine adjective morto means "dead." The pronunciation is "ootch-TCHEHL-loh MOHR-toh."
Walt Whitman's "Captain" represents Abraham Lincoln. In the poem it says 'our fearful trip is done', meaning the civil war. The phrase 'the prize we sought is won', means Union victory. The part where it says the captain is dead it is symbolic of the assassination of Abraham Lincoln.