In Christ Shall All Be Make Alive: 1 Corinthians 15:20-23, 50-57

1 Corinthians 15:20: “But now is Christ risen from the dead, and become the firstfruits of them that slept." Those that died in Christ.

1 Corinthians 15:21: “For since by man” [Adam] “came death, by man” [Christ] “came also the resurrection of the dead.”

1 Corinthians 15:22: “For as in Adam all die, even so in Christ shall all be made alive.” See John 10:27-28 John 10:27: "My sheep hear my voice, and I know them, and they follow me:"

John 10:28: "And I give unto them eternal life; and they shall never perish, neither shall any man pluck them out of my hand." .

1 Corinthians 15:23: “But every man in his own order: Christ the firstfruits; afterward they that are Christ's at his coming.” See 1 Thessalonians 3:13 1 Thessalonians 3:13: "…at the coming of our Lord Jesus Christ with all his saints." , Revelation 14:1, 4 Revelation 14:1: "And I” [John] “looked, and, lo, a Lamb” [Christ] “stood on the mount Sion, and with him an hundred forty and four thousand, having his Father's name written in their foreheads."

Revelation 14:4: "…These were redeemed from among men, being the firstfruits unto God and to the Lamb." and
Revelation 20:4 Revelation 20:4: "And I” [John] “saw thrones, and they” [The 144,000] “sat upon them, and judgment was given unto them: and I saw the souls of them that were beheaded for the witness of Jesus, and for the word of God, and which had not worshipped the Beast, neither his image, neither had received his mark upon their foreheads, or in their hands; and they lived" [Received eternal life] "and reigned with Christ a thousand years." .

1 Corinthians 15:50: "Now this I say, brethren, that flesh and blood" [The earthy body] "cannot inherit the kingdom of God; neither doth corruption" [Death/Adam (Those who rejected Christ)] "inherit incorruption."

1 Corinthians 15:51: "Behold, I shew you a mystery; We" [The Children of God] "shall not all sleep," [Be dead] "but we shall all be changed," 

1 Corinthians 15:52: "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."
See Philippians 3:17, 20-21 Philippians 3:17: "Brethren, be followers together of me," [Paul] "and mark them which walk so as ye have us for an ensample."

Philippians 3:20: "For our conversation is in heaven; from whence also we look for the Saviour, the Lord Jesus Christ:"

Philippians 3:21: "Who shall change our vile body, that it may be fashioned like unto his glorious body, according to the working whereby he is able even to subdue all things unto himself." and Revelation 20:5-6 Revelation 20:5: "But the rest of the dead" [In Christ] "lived not again" [Receive eternal life] "until the thousand years were finished. This is the first resurrection."

Revelation 20:6: "Blessed and holy is he that hath part in the first resurrection: on such" [God’s children, those resurrected from the dead and received eternal life] "the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years." .

1 Corinthians 15:53: "For this corruptible" [The earthy body] "must put on incorruption," [The heavenly body] "and this mortal must put on immortality."

1 Corinthians 15:54: "So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory."

1 Corinthians 15:55: "O death, where is thy sting? O grave, where is thy victory?"

1 Corinthians 15:56: " The sting of death is sin; and the strength of sin is the law."

1 Corinthians 15:57: "But thanks be to God, which giveth us the victory through our Lord Jesus Christ."