Me ~ Is the resurrection key to understanding the role of Jesus Christ regarding man's current dimensional existence and God's promise of eternal life in a higher dimension?
John ~ Yes, it is because by his resurrection he has ended the curse of spiritual death for those of us who accept his gift of eternal life. Of course this is based on His worthiness. I want to say that Jesus demonstrated higher dimensional attributes in his post resurrection state, such as being to appear and disappear at will. To be recognized or not at will and being able to walk the earth as flesh and body but also being able to leave in his spiritual nature. These attributes have been promised to those of us who have been born of the spirit through Jesus Christ when he returns.
The resurrection is an illustration of man's transformation from being dead in sin to being alive in Christ. The resurrected body of Christ appeared in the flesh to His disciples for purpose of revealing His resurrected dimensional attributes. We too will be resurrected from the dead and have such attributes. When Jesus returns, He will raise the dead and give those who were dead and those still alive glorified bodies. People in heaven now have spiritual bodies but they don't have physical bodies which means they do not have glorified bodies as Christ did after His resurrection. But, they will get them and we will too at the rapture.
The dead will rise first and we those still alive will be raptured which means that in the twinkling of an eye, we will be given a body just like His. You see, Jesus having both a physical and spiritual body = a glorified body represents the new Adam. Jesus exists in both in this reality and in higher realities. Jesus demonstrated this as He ate with the disciples after His resurrection. He was alive, a better version of man that we will become too. We will be like Him for we will see Him as He is. We will be known just as He is known.