In our physical earthly world, the life of the flesh is in the blood, see flesh is maintained by our blood.
But our glorified bodies wont have blood, as our life is maintained by God and Christ as new creations,
flesh and blood will not inherit the kingdom of God. When Jesus appeared to the disciples on earth after His being resurrected, he showed also a body of flesh and bone, but that was for their benefit, someone they can touch and feel like themselves, someone they could recognize as himself. Would not make sense for Jesus to appear in a metal body, or as a ghostly apparition. He took on a body similar to their own. Same as when born as a baby when he took on a body of flesh and blood, so that he could identify and relate with people. This new body wont need to breathe air, eat, drink or sleep to keep being alive.
1 Corinthians 15:50
Our Final Victory
Now this I say, brethren,
that flesh and blood cannot inherit the kingdom of God; nor does corruption inherit incorruption.
We will still have a body of some kind. Even angels can take on a form that is like flesh and show themselves to people.
In the resurrection, we will have some kind of glorified body
1 Corinthians 15
42 So also
is the resurrection of the dead.
The body is sown in corruption, it is raised in incorruption. 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. There is a natural body, and there is a spiritual body. 45 And so it is written, “The first man Adam became a living being.” The last Adam
became a life-giving spirit.
46 However, the spiritual is not first, but the natural, and afterward the spiritual. 47 The first man
was of the earth,
made of dust; the second Man
is the Lord from heaven. 48 As
was the
man of dust, so also
are those
who are made of dust; and as
is the heavenly
Man, so also
are those
who are heavenly. 49
And as we have borne the image of the man of dust, we shall also bear the image of the heavenly Man.
Our Final Victory
50 Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; nor does corruption inherit incorruption. 51 Behold, I tell you a mystery:
We shall not all sleep, but we shall all be changed— 52 in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet will sound, and the dead will be raised incorruptible, and we shall be changed. 53 For this corruptible must put on incorruption, and this mortal
must put on immortality. 54 So when this corruptible has put on incorruption, and this mortal has put on immortality, then shall be brought to pass the saying that is written: “Death is swallowed up in victory.”
55 “O Death, where
is your sting?
O Hades, where
is your victory?”
56 The sting of death
is sin, and the strength of sin
is the law. 57 But thanks
be to God, who gives us the victory through our Lord Jesus Christ.
58 Therefore, my beloved brethren, be steadfast, immovable, always abounding in the work of the Lord, knowing that your labor is not in vain in the Lord.