Who said the slaves were free in emancipation proclamation?

The Emancipation Proclamation, issued by President Abraham Lincoln on January 1, 1863, declared that all slaves in the Confederate states were to be set free. Lincoln's proclamation aimed to weaken the Confederacy's ability to wage war by freeing their labor force. However, it did not free slaves in border states loyal to the Union, and it was a strategic war measure rather than a comprehensive abolition of slavery.