So when the Emancipation Proclamation said, "And I hereby enjoin upon the people so declared to be free to abstain from all violence, unless in necessary self-defence; and I recommend to them that, in all cases when allowed, they labor faithfully for reasonable wages" it was actually a code for engage in slave uprisings?
Ending slavery was an economic sanction, one which was hoped would shut things down in the South.
It didn't matter. Lincoln had no authority over the states in secession, and those were the states to which the proclamation applied. ...governments derive their just powers from the consent of the governed... and that consent had been revoked.