Sadly, because this thread is bare of responses to the question, it kind of shows many brethren are not up on this topic from The Bible. I guess for many it causes too much confusion, when it should not. But for the Grace of God, here go I...
1. Hebrews 4:12 reveals that God created us with 3 Parts - a soul, a spirit, and a flesh and bone body.
Our flesh body is a separate dimension and operation than our spirit and our soul. This is shown by 2 major Scripture proofs. The first is with Ecclesiastes 12:5-7. There Solomon reveals that a "silver cord" exists, that when it is severed at flesh death, our flesh goes back to the earthly elements where it came from, but our spirit goes back to God Who gave it.
And in Matthew 10:28, Lord Jesus told us to not fear those who can kill our flesh body, but not our soul. So that means our 'spirit' and 'soul' both continue after death of our flesh. It points to our spirit and soul as being linked together.
2. In John 3:6, Lord Jesus said that which is born of the flesh is flesh, and that which is born of The Spirit is spirit. By that He was emphatically pointing to the existence of two dimensions of existence, this earthly dimension in which we now dwell, and then the Heavenly dimension of Spirit where God and the angels dwell. Thus belief in the existence of both an earthly existence, and a heavenly existence, is taught in God's Word. The problem many have is with not understanding about that heavenly dimension of Spirit.
3. The Hebrews 11:3 reveals those 2 different dimensions, when it said that the worlds were framed by The Word of God, so that things which are seen were not made of things which do appear. That underlined part is about a law of Physics dealing with thermodynamics which declares that matter can neither be created nor destroyed, but only change its state between a solid, liquid, gas, or vapor. That verse is saying material matter did not... create itself. Since the whole universe is part of our earthly dimension we live in, it is of material matter, even the ether of space between planets and galaxies represents this material world of matter.
That means then, that the material universe had... to have been created by a 'different' dimension than matter. Per God's Word, that would have be the dimension of Spirit, and specific means God Himself, for as Apostle John said, "God is a Spirit" (John 4:24). This is also what Lord Jesus was saying in John 3:6 when He said that which is born of the flesh is flesh, and that which is born of The Spirit is spirit, thus pointing directly to the two different dimensions of existence.
4. The 1 Peter 3:18-20 Scripture reveals that Christ's raised flesh body was "quickened by the Spirit". That suggests Christ's flesh was transfigured to a Spirit body type so it could go into that other dimension of Spirit, which is called Heaven. Christ Jesus at His resurrection then in that quickened Spirit body went to the "spirits in prison" who had died back to the time of the flood of Noah. And Jesus preached The Gospel to those spirits of the dead. In the next 1 Peter 4 chapter, we are told the reason why Jesus preached The Gospel to the dead; it was so the dead would be judged according to men in the flesh, but live according to God in the spirit. This reveals that man's 'soul sleep' tradition is false.
5. Recall the Ecclesiastes 12:5-7 Scripture again that shows our 'spirit' part goes back to God when our flesh body dies. Some men, no doubt influenced by man's false 'soul sleep' tradition, believe that idea of "spirit" there in Eccl.12 just means a 'life giving FORCE' that goes back to God, and nothing more. Some even equate it with life force that exists within plant life even. But that is not... how that idea of "spirit" in Eccl.12 is meant.
In 2 Corinthians 5, Apostle Paul explained that if our earthly house were dissolved, we still have a building of God, a house not made with hands, eternal in the heavens. He was using the idea of a 'house' or dwelling to point to our flesh body which our soul/spirit dwells in. But then Paul points to another "house" that is different, if our flesh 'house' were dissolved and no more. That other house is made up of spirit, and is of that other dimension, the dimension of Spirit.
Paul was pointing to our 'spirit' body that dwells inside our flesh and is attached to it like Eccl.12 showed about the "silver cord". With 2 Corinthians 5, Paul revealed our 'spirit' part is actually about an outward body image likeness for that other dimension, the heavenly. It is actually another type of body that we already have, dwelling within our flesh. And it leaves our flesh body when our flesh dies, going back to God. Some call it the soul, but the soul in reality is what makes us individuals, our person.
6. The dimension of Spirit permeates through all the material world. It is invisible to the naked eye, yet it still exists. It is not limited to space or time, as space and time are actually creations of this material world. Per 2 Corinthians 12, Apostle Paul spoke of one he knew that was caught up to the third heaven, and heard words not lawful to utter. Per Acts 14, Paul was once stoned and thought to be dead. But he revived when the Apostles stood over him. Mostly likely Paul was being modest and was speaking of himself in 2 Corinthians 12, which points to a near death experience (NDE).
Recall Eccl.12 again about that "silver cord". It points that flesh death happens when that "silver cord" is severed. What if not severed with a traumatic experience, like what Apostle Paul had with his spirit "caught up" to the third heaven? Paul even said that he did not know whether he was in the body, or out of the body. Now Paul would not have even mentioned that kind of 'out of the body' idea unless he understood something about the different parts like our spirit vs. our flesh.
How do we communicate with God? Is He invisibly right next to us when we pray, or an angel messenger hears our prayer and takes it up to Him in Heaven? I agree both of those ideas are plausible. But our 'spirit' inside our flesh actually serves as a line to Him when He hears our prayers. That dimension of Spirit doesn't have the limitations this material world has.
I recall when I was in the military overseas in Europe, and I was sitting on a spare bed in a friend's barracks room next to mine. And tears started running down my face. He looked at me and asked if I was OK, and I actually kind of laughed, because I didn't have a clue why I was crying and what emotion it was that had come over me. The next day, my father had reached me through the autobon phone system via the Red Cross, and told me my grandmother had died, and the last thing she said was, "where's David?" She died in a hospital back in the United States, and I was in Spain in Europe. Thus that world of Spirit does not have the limitations of this material world.
(Continued...)