“He (Lincoln) flipped the meaning almost 180 degrees, and used it to justify the very opposite thing which the Declaration said.”
The Declaration of Independence remains the strongest brief ever written in support of secession. Lincoln, as you say, turned it into its opposite.
Fixed it for you.
Revolution- a forcible overthrow of a government or social order, in favor of a new system:
Secession-the action of withdrawing formally from membership of a federation or body, especially a political state:
Two different meanings. The founding fathers revolted, they never claimed anything else or expected England to just let them go. So did the southern rebels but they claimed to be legally leaving by secession. A word that appears nowhere in the Constitution.