Human beings were created from the dust of this earth (Genesis 2:7). Our human bodies were not made to last forever. To live forever our mortal bodies must be changed to become immortal.
“There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the terrestrial is another. 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” (1 Corinthians 15:40–41).
To see and be with God and Jesus in the heavens at the end of this world we must become quickening spirits (John 5:21–22).
“The first man is of the earth, earthy: the second man is the Lord from heaven. And as we have borne the image of the earthy, we shall also bear the image of the heavenly” (1 Corinthians 15:47–49).
When Jesus arose from the dead, he obtained a celestial body. At the end of time, those who are rewarded with the gift of eternal light can die no more and will become equal to the angels, being the children of God and the children of the resurrection (Matthew 20:36).
“For as the Father rises up the dead, and quickeneth them; even so the Son quickeneth whom he will. For the Father judgeth no man, but hath committed all judgment unto the Son” (John 5:21–22).
“And so it is written, The first man Adam was made a living soul; the last Adam was made a quickening spirit” (1 Corinthians 15:45).
“Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption. Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed, For this corruptible must put on incorruption, and this mortal must put on immortality” (1 Corinthians 15:50-51, 53).
Therefore, the Apostle Paul also said: “Set your affection on things above, not on things on the earth. For ye are dead, and your life is hid with Christ in God” (Colossians 3:2–3).
“For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first, then we which are alive and remain shall be caught up together with them in the clouds, to meet the Lord in the air: and so shall we ever be with the Lord” (1 Thessalonians 4:16–17).
“Then cometh the end, when he shall have delivered up the kingdom to God, even the Father; when he shall have put down all rule and all authority and power. For he must reign, till he hath put all enemies under his feet. The last enemy that shall be destroyed is death” (1 Corinthians 15:24-26).
“Wherefore comfort one another with these words” (1 Thessalonians 4:18).