God primarily speaks to us by knowledge and not by understanding.
The understanding comes to us as we obey God and act out on the knowledge which Christ has given to us.
Matt 13:11 He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given.
12 For whosoever hath, to him shall be given, and he shall have more abundance: but whosoever hath not, from him shall be taken away even that he hath.
13 Therefore speak I to them in parables: because they seeing see not; and hearing they hear not, neither do they understand.
14 And in them is fulfilled the prophecy of Esaias, which saith, By hearing ye shall hear, and shall not understand; and seeing ye shall see, and shall not perceive:
15 For this people’s heart is waxed gross, and their ears are dull of hearing, and their eyes they have closed; lest at any time they should see with their eyes, and hear with their ears, and should understand with their heart, and should be converted, and I should heal them.
God utilizes spiritual knowledge to reveal the realities of the objects formerly in the visible Garden of Eden.
He has now made them invisible and caused them to dwell in heavenly places, in mysteries.
One reason why God created heavenly places and put his eternal objects, shrouded in mysteries, into these places is because of sin.
If man had not sinned, a lot more of what God has put into the invisible would have been visible. Invisibility is tool to make something inaccessible. God made His treasures inaccessible from sinful man and keep them safe and inaccessible.
Joh 2:25 And needed not that any should testify of man: for he knew what was in man.
God is smart. He will never do things according to man’s terms, but His.
He safely hides His treasures from us until we are ready for Him; on His terms.
When Adam sinned the earth with all its objects and places where subjected to the curse of sin.
They ceased becoming eternally functioning, flawless and incorruptible.
God immediately barred access to the Garden of Eden which had the Tree of Eternal Life in it, by placing two angels with flaming swords at its entrance.
Re 2:7 He that hath an ear, let him hear what the Spirit saith unto the churches; To him that overcometh will I give to eat of the tree of life, which is in the midst of the paradise of God.
He also made this place with its tree invisible and inaccessible to the physical senses.
What makes sin so horrible?
The components on earth which made it eternal, flawless, and without corruption, were all marred, making them temporal and subject to fracture and death.
The components of heaven which God had made visible in the Garden of Eden, God hid them and made them invisible, to keep them safe and so that sinful man, who does not care about God, could not tamper with them in his lusts for power.
Ro 5:2 By whom also we have access by faith into this grace wherein we stand, and rejoice in hope of the glory of God.
Eph 2:18 For through him we both have access by one Spirit unto the Father.
Eph 3:12 In whom we have boldness and access with confidence by the faith of him
Our walk with Christ is all about the process of re accessing, the things of God’s kingdom, now invisible, but which Christ through His work has brought back to us.
God longs to reveal this invisible object back us, but only through Christ who is the revelator.