“At thy right hand there are pleasures for evermore” (Ps. 16: 11)
“And I heard the number of them which were sealed: and there were sealed an hundred and forty and four thousand of all the tribes of the children of Israel. Of the tribe of Juda were sealed twelve thousand. Of the tribe of Reuben were sealed twelve thousand. Of the tribe of Gad were sealed twelve thousand. Of the tribe of Aser were sealed twelve thousand. Of the tribe of Nepthalim were sealed twelve thousand. Of the tribe of Manasses were sealed twelve thousand. Of the tribe of Simeon were sealed twelve thousand. Of the tribe of Levi were sealed twelve thousand. Of the tribe of Issachar were sealed twelve thousand. Of the tribe of Zabulon were sealed twelve thousand. Of the tribe of Joseph were sealed twelve thousand. Of the tribe of Benjamin were sealed twelve thousand” (Rev. 7:4–8).
So now we come to the 144,000. Before getting to what that number represents, we should first consider how it was derived. A basic military unit in ancient Israel was a chiliad, a thousand men (Num. 31:4-5). If you take the number of tribes, which is 12, and square that number, you get 144. Multiply by a thousand, and you have a symbolic number for the host of Israel.
Another thing we should take note of is the fact that the tribes are listed out of their usual order. The tribe of Judah comes first, the tribe of the Christ. The tribe of Dan is missing, and Joseph is listed as a tribe instead of Ephraim. Some have assumed that Dan and Ephraim, tribes that had a special problem with idolatry, are missing for that reason.
Among those who believe the book of Revelation was largely fulfilled in the first century, the common assumption is that the 144,000 is a number that symbolizes the full and complete number of Jewish Christians who escaped death when the city of Jerusalem was demolished in 70 A.D. This has the advantage of keeping the interpretation anchored in the first century, where the action of this book largely is.
But at the same time, there is an indication of a much more cosmic interpretation, which is that the number represents the entire number of the elect. The argument for this is that John heard the number 144,000, while in the next verse, John turned and looked and saw a multitude that no one could number. This appears to be the elect, and it also appears to be a visual representation of the symbolic number he had just heard. This is the approach I would favor.
Some think that it is odd that the Christian church would be listed by tribe, but it is symbolically fitting. There is a reason why Christ selected 12 apostles. The church is identified with the true Israel elsewhere (Gal. 6:16; Eph. 2:12).