And I heard the number of the sealed, 144,000, sealed from every tribe of the sons of Israel: 12,000 from the tribe of Judah were sealed, 12,000 from the tribe of Reuben, 12,000 from the tribe of Gad, 12,000 from the tribe of Asher, 12,000 from the tribe of Naphtali, 12,000 from the tribe of Manasseh, 12,000 from the tribe of Simeon, 12,000 from the tribe of Levi, 12,000 from the tribe of Issachar,12,000 from the tribe of Zebulun, 12,000 from the tribe of Joseph, 12,000 from the tribe of Benjamin were sealed. (Revelation 7:4-8 ESV).
It is more convincing to say the 144,000 symbolically represent all Christians throughout history, both Jews and Gentiles. They are God’s army who wage war by being faithful to the Lamb and enduring persecution. The reasons for thinking John refers to all Christians are numerous, and some stem from Revelation 14, where the 144,000 appear again. First, numbers in apocalyptic literature are regularly symbolic. Here we have the number twelve representing the people of God from the twelve tribes in the OT, and the number is squared and then multiplied by 1,000. Hence the number should be understood as a symbolic way of designating the entire people of God.
The greater truth is not found in the number, but in the security of those saved and sealed by God. The cataclysmic judgment of God does not fall on these people. From the “four corners of the world” they are all saved. It is a glorious example of God’s perfect grace.