Knock knock knocking on heaven's door~~~

You wanna know what really happens?
Out there in space of course.
I know exactly what they are doing.
I will put this understanding in a words
That you will be able to understand.
Subspace, aka a plane of existence where a matter can travel to other places in this universe.
Here is my riddle for answer to this.

When the door of the heaven is in front of you, a soul, that will bite you like a serpent by the way, will question you which the answer is one of the key of the door of the heaven.
When the door is opened?
A vast plane of existence that you never thought of, a place where everything is joined together, in there, you see this door to every places in this universe, all you have to do? Use the same key that used for the door of the heaven, and you will reach anywhere in this universe.
So that key? Well... Lets just say...
It is just about the right time to reveal it Isnt it? Well... as a person who opened this door of the Heaven, I tell all of you.
The hint to the first key you will need is.
Know who you are?
The true wisdom is knowing that you know nothing?
To be or not to be?
Nono no,  a recycled one.
A hint is, eh hem.
"Please my friends... as I take this last breath... I wish to raise my hand once more... just once more... to touch... sigh... I wonder when ill touch again... Im gonna miss it..." and the eyes closes... " That sun light..." closed eyes.
So my words of this would be!

With all my heart, I love you for ever and ever more than ever. All of you :)

Oh you dont get it didn't you -_-...
Heart. Go research. Key is pressure.