Greetings @Sarafeena_Sage! 
I wanted to reply to your comment but I have a lot to say haha- I hope you donāt mind that I started a new discussion to avoid hijacking the other conversation!
Before jumping into your dream, I just want to say that I really love Dream Magick but my views around it have evolved a lot over my years of practice. While I used to jump in and try to find meaning in every detail of a dream, I no longer view (most) dreams as tools for divination.
(To avoid reposting my little rants Iāll just share the links on the limits of reading magickal symbolism (and avoiding āreading burn-outā) as well as my own personal beliefs about dream meanings that go into more details- in case anyone is interested!)
TLDR: Iām in the school of thought that not everything you encounter in a dream (nor random things found in daily life) automatically carries magickal symbolism.
That being said, if you are having the same dream over and over again or you have a vivid dream experience that feels meaningful to you- those are signs that there may be a deeper meaning and a message involved.
As this dream seems to have stuck with you over many days, we can definitely jump in and take a look!
4 is a powerful number- it represents things such as the seasons, the solstice/equinoxes, the four directions, the four elements, etc. The 4 ghosts in your dream could thus potentially be representative of some higher force, power, or deities.
ā Do you work with something in your Craft that is a set of four?
Alternatively, they could be the actual spirits of people you know- either dream figures of those still alive, or contact from those you knew who have moved on 
The desire to prove something is true is a basic human urge, something that commonly surfaces in dreams. My gut instinct with this aspect is that there wasnāt a magickal message involved, but rather that this emotion is something you could benefit from exploring.
The situation in the dream is likely representing something you are feeling (either consciously or subconsciously).
ā Is there someone doubting you? Do you feel the need to prove yourself (be it your Craft, your job, your hobby, your love, something else) to someone else, someone whose opinion and trust you value very highly?
I would recommend a deep meditation on this to try and uncover what you are feeling, and what you might to do to ease these feelings of pressure and the urge to constantly have to prove yourself.
Interesting! 
I would read this as: not everything is what it appears to be. Something that may seem scary or, alternatively, something that seems occult may in fact be something mundane and normal. Thatās not a bad thing- just something to be aware and mindful of.
These are just my thoughts about the dream- like with tarot/oracle/tea leaf/other divinations, I always believe the person who experienced them/the reader is the closest to the heart of the situation and will thus have the most accurate interpretation. Feel free to take what Iāve said above and change it/apply to best suit you
I hope I could help a bit with the dream interpretation!
Blessed be, Sarall! 