Here you will find the Poem St. Peter and the Angel of poet Denise Levertov
Delivered out of raw continual pain, smell of darkness, groans of those others to whom he was chained-- unchained, and led past the sleepers, door after door silently opening-- out! And along a long street's majestic emptiness under the moon: one hand on the angel's shoulder, one feeling the air before him, eyes open but fixed... And not till he saw the angel had left him, alone and free to resume the ecstatic, dangerous, wearisome roads of what he had still to do, not till then did he recognize this was no dream. More frightening than arrest, than being chained to his warders: he could hear his own footsteps suddenly. Had the angel's feet made any sound? He could not recall. No one had missed him, no one was in pursuit. He himself must be the key, now, to the next door, the next terrors of freedom and joy.