The spirit spoken of is the awareness in every man that can conceive a better state and, by dwelling in it, bring it to pass. To be anointed is to wake up to this power. The good news for the meek, the teachable, is that no outer jailer holds them. The captives, the brokenhearted, the prisoners are all one person, held not by walls but by a state of mind kept as though nothing else were possible.
Liberty comes by a shift of dwelling. A man leaves the condition of lack and takes up residence in the fulfilled wish, and the prison opens because it was made of assumption and nothing else. The rescue is inward and shows itself plainly outside. A person imprisoned by his own imagining is set free by the same imagining, the moment he chooses to occupy the freedom instead.