1 Corinthians 15:12-19 (NASB)
12 "Now if Christ is preached, that He has been raised from the dead, how do some among you say that there is no resurrection of the dead?
13 But if there is no resurrection of the dead, not even Christ has been raised;
14 and if Christ has not been raised, then our preaching is vain, your faith also is vain.
15 Moreover we are even found to be false witnesses of God, because we testified against God that He raised Christ, whom He did not raise, if in fact the dead are not raised.
16 For if the dead are not raised, not even Christ has been raised;
17 and if Christ has not been raised, your faith is worthless; you are still in your sins.
18 Then those also who have fallen asleep in Christ have perished.
19 If we have hoped in Christ in this life only, we are of all men most to be pitied."
These verses clearly teach that as Christ was raised, we will be raised. How was he raised? His body, which went into the grave, was raised.
1 Corinthians 15:20(NASB)
20 "But now Christ has been raised from the dead, the first fruits of those who are asleep."
1 Corinthians 15:35 – 44 (NASB)
35 But someone will say, "How are the dead raised? And with what kind of body do they come?"
36 You fool! That which you sow does not come to life unless it dies;
37 and that which you sow, you do not sow the body which is to be, but a bare grain, perhaps of wheat or of something else.
38 But God gives it a body just as He wished, and to each of the seeds a body of its own.
39 All flesh is not the same flesh, but there is one flesh of men, and another flesh of beasts, and another flesh of birds, and another of fish.
40 There are also heavenly bodies and earthly bodies, but the glory of the heavenly is one, and the glory of the earthly is another.
41 There is one glory of the sun, and another glory of the moon, and another glory of the stars; for star differs from star in glory.
42 So also is the resurrection of the dead. It is sown a perishable body, it is raised an imperishable body;
43 it is sown in dishonor, it is raised in glory; it is sown in weakness, it is raised in power;
44 it is sown a natural body, it is raised a spiritual body. If there is a natural body, there is also a spiritual body."
Notice carefully in this context the antecedent of the pronouns is the same in each case. The "it" that is sown is the "it" that is raised. A change occurs in which the mortal becomes immortal and the corruptible becomes incorruptible, but this does not alter the fact that there is to be a resurrection, and resurrection is a word that signifies "to come forth again." We are to be like our Lord, who possessed a body bearing some of the same characteristics that he had before His crucifixion and death (see 1 John 3:1 – 24; Luke 24:39).
20 "For our citizenship is in heaven, from which also we eagerly wait for a Savior, the Lord Jesus Christ;
21 who will transform the body of our humble state into conformity with the body of His glory, by the exertion of the power that He has even to subject all things to Himself."
Yes, the body that goes into the grave will come from the grave. Any more than this, we cannot know until the day of resurrection!