How are the dead to be raised?
The analogy of the corn of wheat is used to illustrate the answer. Out of the death, the burial of the corn of wheat, comes a harvest many fold. Life reappears in a higher form. The identity remains the same, it is still wheat, but infinitely greater.
Our new resurrected bodies will be fitted for eternity. They will have a new vitality, and a new strength. There will be no curse, no sickness, and no death to afflict these resurrected bodies. They will be like the resurrected body of Jesus.
I John 3:2
"Beloved, now are we the sons of God, and it doth not yet appear what we shall be; but we know that, when He shall appear, we shall be like Him; for we shall see Him as He is."
There will still be recognition of others after the resurrection. The rich man recognized Lazarus after their deaths. We shall "know as we are known."
Therefore, when I get to heaven, even Paul, Moses, Enoch and Elijah will instantly recognize and know me and I will know them. Peter, James, and John - even while in their earthly bodies - recognized Elijah and Moses, whom they had never met. There is something about the spiritual bodies that make them instantly recognized.
There was in the days of Paul, and even somewhat today, a false teaching that one can be baptized for someone already dead. This substitute baptism is supposedly sufficient to get the person to heaven. Paul did not teach this, and neither does the Bible. Yet, Paul uses the idea of this teaching to show these confused Corinthians how foolish they are. He teaches, that if they believe that they can be baptized for the dead, and then they teach that the dead are not going to be resurrected, they are utterly foolish.
Most false doctrines are inconsistent and foolish in the same way. They are utterly stupefied by their own mouths, that teach heresies. Those that teach a oneness doctrine, and say that the Bible teaches an absolute one of the Godhead, then come to I Corinthians 3:6-8 and see no inconsistency to teach that Paul and Apollos were not the same person.
I Corinthians 3:6-8
"I have planted, Apollos watered... he that planteth and he that watereth are one."
Why are they not consistent? They know that Paul and Apollos were two different persons, but they can argue that the same language used to refer to God and Christ being one, means- absolutely - that They are One Person. Inconsistency plagues those of false doctrines.
There are reasons why the false doctrine of baptism for the dead is Unscriptural and erroneous.
1. Every law of Scripture must be proven by two or three Scriptures.
(II Cor. 13:1, Matthew 18:16, Deut. 19:15-18)
2. The Corinthians were in many errors, and this is just one of them.
(I Cor. 11:19)
3. Baptism in water does not save even the living, let alone save the dead. (Luke 13:1-5, Romans 10:9-10, Ephesians 2:8-9, I John 1:9)
4. Salvation is a personal matter, and cannot be obtained by proxy.
(Mark 16:16, Luke 13:1-5, John 3:16-20, Acts 3:19, Romans 10:9-10, Revelation 22:17)
5. There is no command or example of this in Scripture.
6. The simple truth is that Paul was showing the inconsistency of the false teachers in Corinth.
I Corinthians 15:29
"Else what shall they (the false teachers) do who are baptized for the dead, if the dead rise not at all? why are they (the false teachers) then baptized for the dead?"