Human beings are mortal beings because God created us from the dust of the earth.
“And the LORD God formed man of the dust of the ground, and breathed into his nostrils the breath of life; and man became a living soul” (Genesis 2:7).
The habitation of life on this earth is only for a time.
“And hath made of one blood all nations of men for to dwell on all the face of the earth, and hath determined the times before appointed, and the bounds of their habitation” (Acts 17:26).
For human beings to get from this earth to HEAVEN, our terrestrial or mortal bodies must be changed into CELESTIAL or IMMORTAL bodies.
“Now this I say, brethren, that flesh and blood cannot inherit the kingdom of God; neither doth corruption inherit incorruption” (1 Corinthians 15:50).
“There are also celestial bodies, and bodies terrestrial: but the glory of the celestial is one, and the glory of the terrestrial is another” (1 Corinthians 15:40).
JESUS is the ONLY person that GOD has given POWER to change earthly to HEAVENLY bodies (John 5:25-29).
“The first man is of the earth, earthy: the second man is the Lord from heaven. As is the earthy, such are they also that are earthy: and as is the heavenly, such are they also that are heavenly. And as we have borne the image of the earthy, we shall also bear the image of the heavenly. And so it is written, the first man Adam was made a living soul; the last Adam was made a quickening spirit” (1 Corinthians 15:47–49, 45).
On the Last Day, the Day of Judgment, when Jesus descends from heaven on the sound of the last trumpet, to live forever, our frame must be changed from “clay” to “LIGHT” to become a quickening spririt (1 Thessalonians 4:16-18); just as our Lord, Savior and King when he was raised from the dead (Luke 24:39).
“Wherefore God saith: ‘Awake thou that sleepest, and arise from the dead, and Christ shall give thee light’” (Ephesians 5:14).
“Behold, I shew you a mystery; We shall not all sleep, but we shall all be changed” (1 Corinthians 15:51).
“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. For this corruptible must put on incorruption, and this [MORTAL MUST PUT ON IMMORTALITY]” (1 Corinthians 15:52–53).
Human beings who are not changed from earth to HEAVENLY will be cast into the Lake of Fire!
“O LORD, the hope of Israel, all that forsake thee shall be ashamed, and they that depart from me shall be written in the earth, because they have forsaken the LORD, the fountain of living waters” (Jeremiah 17:13).
“The wicked shall be turned into hell, and all the nations that forget God” (Psalm 9:7).
“The same shall drink of the wine of the wrath of God, which is poured out without mixture into the cup of his indignation; and he shall be tormented with fire and brimstone in the presence of the holy angels, and in the presence of the Lamb” (Revelation 14:10).
“Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap. For he that soweth to his flesh shall of the flesh reap corruption; but he that soweth to the Spirit shall of the Spirit reap life everlasting” (Galatians 6:7–8).