I believe that Jesus and the First Century Apostles and Disciples were the Firstfruits of the Resurrection. Furthermore, based upon my understanding of the Scriptures, I believe that God has been working throughout the ages since that time to bring in the latter fruits and the latter harvest.
“Firstfruits of the Resurrection” KJV Bible Verse List:
“And the LORD said unto Moses, Whosoever hath sinned against me, him will I blot out of my book. Therefore now go, lead the people unto the place of which I have spoken unto thee: behold, mine Angel shall go before thee: nevertheless in the day when I visit I will visit their sin upon them. And the LORD plagued the people, because they made the calf, which Aaron made.” Exodus 32:33-35, KJV
“Therefore thus saith the LORD God of Israel against the pastors that feed my people; Ye have scattered my flock, and driven them away, and have not visited them: behold, I will visit upon you the evil of your doings, saith the LORD.” Jeremiah 23:2, KJV
“For thus saith the LORD of hosts, the God of Israel; Let not your prophets and your diviners, that be in the midst of you, deceive you, neither hearken to your dreams which ye cause to be dreamed. For they prophesy falsely unto you in my name: I have not sent them, saith the LORD. For thus saith the LORD, That after seventy years be accomplished at Babylon I will visit you, and perform my good word toward you, in causing you to return to this place.” Jeremiah 29:8-10, KJV
“Flee ye, turn back, dwell deep, O inhabitants of Dedan; for I will bring the calamity of Esau upon him, the time that I will visit him.” Jeremiah 49:8, KJV
“Behold, I am against thee, O thou most proud, saith the Lord GOD of hosts: for thy day is come, the time that I will visit thee. And the most proud shall stumble and fall, and none shall raise him up: and I will kindle a fire in his cities, and it shall devour all round about him.” Jeremiah 50:31-32, KJV
“And now will I discover her lewdness in the sight of her lovers, and none shall deliver her out of mine hand. I will also cause all her mirth to cease, her feast days, her new moons, and her sabbaths, and all her solemn feasts. And I will destroy her vines and her fig trees, whereof she hath said, These are my rewards that my lovers have given me: and I will make them a forest, and the beasts of the field shall eat them. And I will visit upon her the days of Baalim, wherein she burned incense to them, and she decked herself with her earrings and her jewels, and she went after her lovers, and forgat me, saith the LORD.” Hosea 2:10-13, KJV
“But in the days of the voice of the seventh angel, when he shall begin to sound, THE MYSTERY OF GOD should be finished, as he hath declared to his servants the prophets.” Revelation 10:7, KJV
“Now to him that is of power to stablish you according to my gospel, and the preaching of Jesus Christ, according to the REVELATION OF THE MYSTERY, which was kept secret since the world began, But now is made manifest, and by the scriptures of the prophets, according to the commandment of the everlasting God, made known to all nations for the obedience of faith: To God only wise, be glory through Jesus Christ for ever. Amen. Written to the Romans from Corinthus, and sent by Phebe servant of the church at Cenchrea.” Romans 16:25-27, KJV
“Behold, I SHEW YOU A MYSTERY; We shall not all sleep, but we shall all be changed, 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.” 1 Corinthians 15:51-52, KJV
“For I know that my redeemer liveth, and that he shall stand at the latter day upon the earth: And though after my skin worms destroy this body, yet in my flesh shall I see God: Whom I shall see for myself, and mine eyes shall behold, and not another; though my reins be consumed within me.” Job 19:25-27, KJV
“Thy dead men shall live, together with my dead body shall they arise. Awake and sing, ye that dwell in dust: for thy dew is as the dew of herbs, and the earth shall cast out the dead.” Isaiah 26:19, KJV
“Marvel not at this: for the hour is coming, in the which all that are in the graves shall hear his voice, And shall come forth; they that have done good, unto the resurrection of life; and they that have done evil, unto the resurrection of damnation.” John 5:28-29, KJV
“Jesus saith unto her, Thy brother shall rise again. Martha saith unto him, I know that he shall rise again in the resurrection at the last day. Jesus said unto her, I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live: And whosoever liveth and believeth in me shall never die. Believest thou this? She saith unto him, Yea, Lord: I believe that thou art the Christ, the Son of God, which should come into the world.” John 11:23-27, KJV
“And not only they, but ourselves also, which have the firstfruits of the Spirit, even we ourselves groan within ourselves, waiting for the adoption, to wit, the redemption of our body.” Romans 8:23, KJV
“For we know that if our earthly house of this tabernacle [meaning our body of flesh] were dissolved, we have a building of God, an house not made with hands, eternal in the heavens. For in this we groan, earnestly desiring to be clothed upon with our house which is from heaven: If so be that being clothed we shall not be found naked. For we that are in this tabernacle do groan, being burdened: not for that we would be unclothed, but clothed upon, that mortality might be swallowed up of life.” 2 Corinthians 5:1-4, KJV
“But I would not have you to be ignorant, brethren, concerning them which are asleep, that ye sorrow not, even as others which have no hope. For if we believe that Jesus died and rose again, even so them also which sleep in Jesus will God bring with him. For this we say unto you by the word of the Lord, that we which are alive and remain unto the coming of the Lord shall not prevent them which are asleep. 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. Wherefore comfort one another with these words.” 1 Thessalonians 4:13-18, KJV