Badfish: The resurrection spoken of in 1 Corinthians 15 is a spiritual resurrection - not fleshly. It is talking about being raised as a spirit, not into a human body of flesh. That's why it says "It is sown a physical body, it is raised up a spiritual body. If there is a physical body, there is also a spiritual one." So they wouldn't be resurrected into mortal fleshly human bodies that can die a physical death again. But if you die as a spirit, you must be thrown into the Lake of Fire, which means the Second Death (Revelation 20:14-15).
I agree that it’s a spiritual resurrection, but what exactly is that? Does it mean that people are resurrected as spirits? The scripture doesn’t say that. When Jesus appeared to the apostles, they at first thought he’d been resurrected as a spirit. But he was quick to explain to them that this was not the case. “Why do fears arise in your hearts,” he asked. “Behold my hands and my feet, that it is I myself. Handle me and see; for a spirit hath not flesh and hones as ye see me have.”
To emphasize his point, Jesus suddenly asked, “Have ye any meat?” And they gave him a piece of broiled fish and honey comb, and Jesus ate it before them. Is it possible that Jesus was hungry after three days in the tomb? That seems rather unlikely; instead, it appeared to be a teaching device.
Paul later writes, “ Beloved, now are we the sons of God, and it doth not yet appear what we shall be [in the resurrection]: but we know that, when [Christ] shall appear, we shall be like him; for we shall see him as he is. And every man that hath this hope in him purifieth himself, even as he is pure. ”
In short, according to the scriptures, our resurrection will be like Christ’s; yet it will be a spiritual resurrection. So knowing it also will be a physical resurrection, how can it be both physical and spiritual? And how did Jesus go through the walls and ceilings of the building? The Jehovah's Witnesses have used that as evidence that Jesus was indeed a spirit. How else could he have passed through solid walls unless he was a spirit? That argument today is completely specious as it was when it was conceived. What we know today of quantum physics, wormholes, interdimensional travel, particles that can coexist in different dimensions and much more. Jesus, having all power and authority from the Father, could easily go through walls and ceilings.
So what is spiritual resurrection? Again, a man, having separated from the flesh through death, becomes a spirit...a being that is limited in what it can do and experience. Then, in the resurrection, that spirit is reunited with the flesh and becomes greatly empowered. But instead of having a corruptible body of flesh and blood, we become perfected beings of immortal flesh, bone and spirit. That is why Jesus said, “A spirit hath not flesh and bone as ye see I have.” Thus we see that Jesus was perfect in his being. He was not a spirit as he was previously when he was Yahweh in the generations before his birth. He was now in the “express image” of his Father and like him in every way.
The term “spiritual resurrection” was an almost irreconcilable issue with the early church fathers. Tertullian acknowledged Christ’s physical body, but was puzzled by the reference to a spiritual resurrection. It was, perhaps, the Spirit of God that animated Christ’s physical body. Whereas they saw the complexities in the issue, the Jehovah's Witnesses rushed in and immediately jumped to the dubious conclusion that Jesus was resurrected as a spirit, manufactured a physical body to deceive the apostles into thinking he wasn’t a spirit, then spent forty days with them as a physical being.
In fact, though, Jesus became a dual nature, being a perfected man of flesh and bone, and spirit. Thus, he would remain forever. That’s why his body was missing from the tomb. It had been restored to him in a glorified condition. And, we’re told, our resurrection can be like Christ’s.