1 Then I looked, and there before me was the Lamb, standing on Mount Zion, and with him 144,000 who had his name and his Father's name written on their foreheads. 2 And I heard a sound from heaven like the roar of rushing waters and like a loud peal of thunder. The sound I heard was like that of harpists playing their harps. 3 And they sang a new song before the throne and before the four living creatures and the elders. No one could learn the song except the 144,000 who had been redeemed from the earth. 4 These are those who did not defile themselves with women, for they kept themselves pure. They follow the Lamb wherever he goes. They were purchased from among men and offered as firstfruits to God and the Lamb. 5 No lie was found in their mouths; they are blameless.
Many sermons have been preached claiming that the 144,000 Jews in Revelation are evangelists left to lead people to Christ during the second half of the tribulation period. But the Bible says nothing of the kind. There is no mention at all of them being evangelists or of them being on the earth during the end of the tribulation period. Rather, they are firstfruits to God of the harvest.
God's people were to give a perfect offering from each harvest as a firstfruits offering to God.
9 Honor the LORD with your wealth, with the firstfruits of all your crops;
The 144,000 Jews are the perfect firstfruits offering of the harvest to God
4 These are those who did not defile themselves with women, for they kept themselves pure. They follow the Lamb wherever he goes. They were purchased from among men and offered as firstfruits to God and the Lamb. 5 No lie was found in their mouths; they are blameless.
They were all men. They were pure. They spoke the truth. They were blameless. And we are told they were "offered as firstfuits to God and to the Lamb."
1 After this I saw four angels standing at the four corners of the earth, holding back the four winds of the earth to prevent any wind from blowing on the land or on the sea or on any tree. 2 Then I saw another angel coming up from the east, having the seal of the living God. He called out in a loud voice to the four angels who had been given power to harm the land and the sea: 3 "Do not harm the land or the sea or the trees until we put a seal on the foreheads of the servants of our God." 4 Then I heard the number of those who were sealed: 144,000 from all the tribes of Israel. 5 From the tribe of Judah 12,000 were sealed, from the tribe of Reuben 12,000, from the tribe of Gad 12,000, 6 from the tribe of Asher 12,000, from the tribe of Naphtali 12,000, from the tribe of Manasseh 12,000, 7 from the tribe of Simeon 12,000, from the tribe of Levi 12,000, from the tribe of Issachar 12,000, 8 from the tribe of Zebulun 12,000, from the tribe of Joseph 12,000, from the tribe of Benjamin 12,000.
9 After this I looked and there before me was a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and in front of the Lamb. They were wearing white robes and were holding palm branches in their hands. 10 And they cried out in a loud voice: "Salvation belongs to our God, who sits on the throne, and to the Lamb."
These great followers of Christ are not tribulation evangelists, they are the required "Firstfruits of the harvest to God."