I’ve found this quote from Lincoln to be illustrative.
“If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all the slaves I would do it; and if I could save it by freeing some and leaving others alone I would also do that. What I do about slavery, and the colored race, I do because I believe it helps to save the Union; and what I forbear, I forbear because I do not believe it would help to save the Union.”
I also find the fact that the Emancipation Proclamation did not free slaves living in border States, but only States that seceded to corroborate this.
That being said, Lincoln had long been know to oppose slavery and supported its abolition.
I’ve found this quote from Lincoln to be illustrative.
“If I could save the Union without freeing any slave I would do it, and if I could save it by freeing all the slaves I would do it; and if I could save it by freeing some and leaving others alone I would also do that. What I do about slavery, and the colored race, I do because I believe it helps to save the Union; and what I forbear, I forbear because I do not believe it would help to save the Union.”
I also find the fact that the Emancipation Proclamation did not free slaves living in border States, but only States that seceded to corroborate this.
That being said, Lincoln had long been know to oppose slavery and supported its abolition.