So, here's how I see how creation works:
When you start looking at God before creation, there are no numbers. God is everything, which would be represented by the number 1, while everything else, which is nothing, would be represented by the number 0. Now, how do you get to more numbers?
Logically, God cannot create anything outside of himself, as there is nothing outside by definition. So, he must divide himself in order to create anything, just like the fertilized egg divides itself to create more cells.
This means: You get to the number 2 by cutting the 1 into equal halves. 2 actually is ½ – this is how all the numbers are created in the first place.
One could now argue that this first division creates the masculine and feminine energy, but as far as I'm concerned, that's not the case. The first division actually creates twins. Two reflections of the 1, both holding equal power. This is the invention of the ego, the individual perspective: I'm here, and where you are, I'm not. Also called 2D. Two dimensions looking at each other. But where's the difference between the two? When they look at each other, they only see a reflection as if they're looking in a mirror, as both stem from the initial 1.
So, each of the twins gets his own domain – a reality and a "mirror" reality, so to speak – in which they hold the power of creation independently of each other. This is the invention of 3D, which is one dimension looking at two others so they can be compared. Each twin divides himself again, creating the beings that can be considered the "gods" of their respective domain from within that domain. That's the separation of masculine and feminine, as the created beings inside a domain cannot hold the power of creation individually. They must unite in order to create, as they share the same domain.
From that point on, every universe (reality bubble) is created in the same way, meaning that each universe (child) has parents.
That's how God creates ISBEs and 3D universes.
But what about 4D and 5D and ...?
Well, the opinion that 4D is "better" than 3D stems from the belief that higher numbers are better than lower numbers. That's quantity before quality. But if you understand how numbers work, as I described above, you understand that the highest number actually is the 1.
In a 3D world, you already have the ability to compare two dimensions, meaning you already are able to look into different directions. This means that 4D, 5D and so on, are already contained within 3D worlds. If you compare 27 different things, you are looking at 27 dimensions, because each thing (singularity) is its own dimension.
You simply don't need to get to a "higher" dimension. You only believe that because you believe that you're in the wrong place. Just think about it: Why do you believe that? Where do you want to be instead of where you are now? And why are you unable to get there? (Hint: It has nothing to do with dimensions.)
So, if you want to leave 3D, the next "higher" step would be 2D, meaning you need to stop comparing dimensions to each other as if one is better than the other. You need to see that everything in creation is a reflection of the first principle, just like the first twins are reflections of each other. In other words: Stop competing with God. Look in the mirror and start recognizing God within yourself – and not only that – start recognizing God within your counterpart, which is every person, every ISBE there is.
Evil hates creation because it hates the fact that its not the only one who is God. That's why it fights freedom and enslaves beings that are free by nature. Evil wants to control 3D, but in wanting that, just ends up fighting the whole world, and therefore also fighting itself. That's why there is no integrity in evil. That's why evil cannot win in the long run.
Unity does not mean to blend every being into one ego, like the Borg in Star Trek do. True unity means loving your neighbor as you love yourself. True unity means respecting freedom.
That's why God created 3D, and when you are fighting it, it's because you don't understand it yet.