Taking effect on 1 January 1863, the Emancipation Proclamation freed only those slaves in areas [which were] then in rebellion. Lincoln issued it reluctantly, because he had wanted victory at Antietam, which would have destroyed the rebel armies, ending the war without his having to abolish slavery. Lincoln's ultimate plan for all Blacks was their deportation, according to Ebony
editor Lerone Bennett in his book Forced into Glory
. Incidentally, Lincoln had explicitly approved of a constitutional amendment proposed by Congress on 2 March 1861, two days before his inauguration. It was not ratified. This 'Thirteenth Amendment' would have provided permanent protection for preexisting slavery in any state:
No amendment shall be made to the Constitution which will authorize or give to Congress the power to abolish or interfere, within any Sate, with the domestic institutions thereof, including that of persons held to labor or service by the laws of said state.
"The Great Emancipator" and large sectors of the Republican Party were far from abolitionists. Slaveholders rejected the Amendment, however, because they wanted to extend slavery into the territories. Moreover, they did not want to pay the hight Morrill Tariff on British textile imports, enacted a few weeks later.
Secession was for Southerners as much about Lincoln's redistributing wealth to the North in the form of subsidies to corporations for 'improvements,' including railroads and other big corporations, financed through extortionate tariffs and enshrining 'The Great Compromiser' Henry Clay's old Whig Party's 'American System,' as it was about perpetuating slavery. Bear in mind that only 5% of Southerners owned slaves, and that most foot soldiers had no slaves.