The context here is the article by Nerdist. I always found it easier to write poetry faster, when I keep the rhyme and rhythm of the song in mind, words just need to be fit in like jigsaw puzzle.
If I were to change the poem a little in quick revision/editing- I would remove the “literally”. Perhaps, better explanation of the aisle.
It is a reference to the inverse of ascension to heaven of the painting by Botticelli from that Dan Brown book, Inferno. A painting I am sure exists, somewhere, other than the recesses of my mind. Heh.
It was a stairway to heaven in a church, which I thought was by that altar worship place. The aisle.
Thanks Compardre K, your morbidity was fueling inspiration.