In one of the first posts, I think on John 1, I showed that Elohim has three puns, 'not dark', 'life', and bread. And that John 1.1-4 can be derived from word play around the first three words of Genesis 1.1. The Hebrew hermeneutic has several types of word play, the word for heaven can be seen as "the Spirit hovered over the face of the waters". John uses the same metaphor in 1 John.
In this case, the word for mist is a pun to the word for testify. The mist is a testimony of God in general revelation.
As similar word play occurs in John 3 when Jesus tells Nicodemas that he must be born again. The word for again in Hebrew also means testify, and it is used in close proximity to being born of the water. You must be born to testify.
These are only a few examples of 'dark sayings' or riddles, but they are systemic to the whole. It appears that every verse of every chapter participates in painting a picture of Christ by using such word play and riddles.
The Greek hermeneutic will have nothing of it. It is too childish. However, this is not free-for-all allegory because the metaphor is based in the word play, and will be the same everywhere it occurs. So if you find a place where water does not represent the word once the hidden layer is unpacked, then it is an error everywhere it was used that way.
When we get to the 'garment of skin' the word for skin is the same as the word for light. Light represents holiness, so God gave Adam a garment of holiness. The popular typology is a memory of this without the source.
So enjoy the word play and check the theology against what is know of Christ in the literal. You will see before too long that no man could invent this, we can only observe it in awe. I suspect these are the kinds of things he taught on the road to Emmaus. As we go, I will highlight verses that show that Jesus and the apostles also used such riddling and word play.
Thanks for asking. I hope that helps.