In the third spatial dimension, if you were to look at the second dimension, you are capable of seeing all angles and aspects of of the space in which you over look. Now if a second dimensional figure were to witness you passing through the second dimension, at any given time there are an infinate number of ways in which you could present yourself. You could just stick the tip of your finger through the threshold and the figure would only see one circle floationg in the sky. If you were to lay your hand flat on the threshold this figure would see the outline of your hand same goes for any appendage you pass through the threshold according to the angle in which you place it is what they see. Now if said figure in the second dimension looks like a human but is only the front plane of a human, being a face and a body with no other dimensional aspects such as sides or a back if you were to lie on the threshold and spin this figure would never be able to fathom this figure which looks like them at one point but is constantly changing. If you were to only stay front facing to the point in which this figure would see you as the same as them then you would be able to communicate with them and they would think you were the same as them and never have any idea that you have this whole other aspect to you which is known as the third dimension.
If you take this aspect to the next level and look at this from our perspective being the third dimensional figure. A being in the 4th spatial dimension would be able to look over our3rd dimension and also see all angles and aspects of our world. This is where it gets tricky and mind blowing to me. If a 4th dimensional figure were to present himself to us in our dimension and we were in some way made in the same form as this being just lacking one extra dimension, this 4th dimensional figure could present himself to us as we are, walking through our dimension only presenting itself as the same as us. However this figure would still have the capability of reaching through different planes of our existance in which we are restricted. ie walking through walls, reaching within our bodies and healing things in which would normally require a surgery, removing tumors and so forth.
The thing that gets me is, with information like this, how is it so hard for people to make the tie between science and religion. Maybe the religions in which people believe arent exactly true, but i believe there is alot more to this connection than we give credit. This is why i find it very naive that people that consider themselves scientist have such a strong disbelife in a higher power. How could you believe that there is life on other planets but not a higher power. Likewise how could you believe that there is this higher power that shows many aspects of a greater dimensional being, but not not believe that he could have "evolved" from something similar to us. I dont discredit evolution, religion, the bing bang, any of these great theories, i just pity poeple for believing that any one of these are just the way it is. There is definatly alot more that ties all of these ideas together and it could use alot more looking into.    just food for thought