NOTES for Joh 14:10-21
When telling His disciples about the Kingdom, Jesus describes it by the example of the relations between Himself and His Father, and also between Himself and His disciples. He says to the disciples: if you ask anything of the Father in My name, then I will do what you ask, and if you ask Me anything, I will do it. Thus, as we see, Jesus illustrates His own words that He is in the Father and the Father is in Him. In His presentation, the Kingdom turns out to be, first of all, a spiritual space, the space of the relations that unite Him with the Father and with all His disciples, uniting them in such a way that He becomes the Mediator between His disciples and the Father.
Perhaps this is exactly what Jesus means when He says that His Kingdom is "not of this world." Indeed, the only thing in us that does not depend in any way on the laws of our untransfigured world is our relation to someone or something, for it is determined exclusively by our will, which, unlike the body or the soul, remains free under any circumstances. And if the space of the Kingdom is precisely the space of our relations, then it truly can be completely independent of the laws of the world in which we live.
The only thing that can hinder this is our own fallen nature. After all, the fall became, first of all, the result of a wrong choice, an erroneous decision, and the consequence of such errors is above all the weakening of the will, which in a fallen person tends to submit to the very nature that, in a normal state, it should have governed. The only way out of this situation is the intervention of another will: also human, but not subject to original sin. For the spiritual space of the Kingdom, the will of the Messiah becomes just such a will. That is why He becomes the Mediator between God and His disciples and followers: without His will the Kingdom is impossible; it simply will not be the Kingdom of God in the true sense of the word.
Once the space of relations has been created, it is filled with the breath of God, thanks to which this space can spread wider and wider, including more and more hearts and saving more and more souls, right up to the moment when the Savior's return marks the completion of this process and the full triumph of the Kingdom that transfigures the world.