It has to be the same body.
No it does not. Again, you are trying explain away what is plainly written.
Corinthians 15:35-44
King James Version
35 But some man will say, How are the dead raised up?
and with what body do they come?
36 Thou fool, that which thou sowest is not quickened, except it die:
Notice below the body that dies IS NOT THE SAME BODY THAT SHALL BE RAISED!
37 And that which
thou sowest, thou sowest not that body that shall be, ( can it be any clearer than that?) but bare grain, it may chance of wheat, or of some other grain:
38 But God giveth it a body as it hath pleased him, and to every seed his own body.
39 All flesh is not the same flesh: but there is one kind of flesh of men, another flesh of beasts, another of fishes, and another of birds.
40 There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the terrestrial is another.
41 There is one glory of the sun, and another glory of the moon, and another glory of the stars: for one star differeth from another star in glory.
42 So also is the resurrection of the dead.
It is sown in corruption; it is raised in incorruption: ( not the same body)
43 It is sown in dishonour;
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.( again, not the same body) There is a natural body, and
there is a spiritual body.”
Howbeit that was not first which is spiritual, but that which is natural; and
afterward that which is spiritual.( natural body is not the same as a spiritual body)
47 The first man is of the earth, earthy; the second man is the Lord from heaven.
48 As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly.
49 And as we have borne the image of the earthy, we shall also bear
the image of the heavenly.
50 Now this I say, brethren, that flesh and blood
cannot inherit the kingdom of God; neither doth corruption inherit incorruption.( no flesh and blood bodies will inherit the kingdom)
51 Behold, I shew you a mystery; We shall not all sleep, but we shall
all be changed, ( look, even those who are alive in the natural body shall be
CHANGED!)
52 In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and
we shall be changed. ( If the living are to keep the same flesh and blood body then that would not be a
change would it?)
This is not hard to grasp for those who have
an open mind.