profound dream about humanity

I had the most profound dream last night about humanity – the entirety of humanity being a "3D projection" of a 4D entity. This absolutely explained the collective consciousness – we are all just „slices”, mere parts of this 4D entity projected into the 3D realm we live in. I mean, if we were all truly a projection of this entity, with every human being a slice of it, it perfectly makes sense that we share a single consciousness. In the same way that as a 3D object has a 2D projection (a shadow), the slices of that shadow are unaware of each other and incapable of comprehending that they are part of the same existence.

From a 3D perspective, this 4D entity would seem to have godlike abilities: it could vanish and reappear at will. Moving in 4D would allow the entity to leave our plane of existence entirely and re-enter it elsewhere.
Now in my dream, this vanishing and reappearing equated to death and rebirth. When we die in our reality, we are reborn somewhere else, on another plane of existence, while still being part of this 4D entity. We simply become a new "slice" of it. Because only a part of this entity's "3D body" would be visible at any given time, our "slice" (=your body and life) intersects with the 3D world we can comprehend. This also explained how our universe looks just like a brain cell – we were all this entity, the brain cells (our universes) made up the collective consciousness.

I’m not sure if I was able to convey my dream in a comprehensible way since I’m not a native English speaker, but I hope you get the gist. This dream was utterly beautiful, and this is the best way I could describe it. It actually reminds me of a segment from Carl Sagan’s Cosmos series, where he explains the 4th dimension projected into 3D: https://www.youtube.com/watch?v=UnURElCzGc0

So I guess, TL;DR: humanity as a whole is the 3D projection of a 4th dimension entity.