Becoming Closer
Who are these people?
nPoetic:  the church
nOthers:  Jews
nFuturist
•Dispensationalist
•“Modern”
In a dazzling display of poetic metaphor, the Amillennialists have concluded that the 144,000 are “the Church”.  The rationale is as follows:
12 is the number of the tribes;  it is also the number of the apostles.  Multiply those together, then by a thousand (signifying a multitude).  Combine that with the fact the Israel is often used to represent the church in Old Testament prophecy.  There you are.
The embarrassing question is, then, who are the multitudes who come next.  Answer:  same bunch, two different views.  I’m not convinced.
Virtually all other commentators agree that these are, in fact, bona fide Jews.  In the historicist view, these are Jews living in the Roman Empire after the time of Constantine.
The futurists take this a bit further.  The old dispensationalist view holds that grace has now been withdrawn from the world, and these Jews are once again under the dispensation of the Law.  They therefore replace the church as God’s agents in the world, and quickly (remember, we have only three and half years to do this) evangelize the world, in fulfillment of Matthew 24:14.  This is said to be in fulfillment of :
(Rom 11:25-26 NIV)  I do not want you to be ignorant of this mystery, brothers, so that you may not be conceited: Israel has experienced a hardening in part until the full number of the Gentiles has come in. {26} And so all Israel will be saved, as it is written: "The deliverer will come from Zion; he will turn godlessness away from Jacob.
More current futurist views ignore the idea that grace is withdrawn;  they see this as a continuation of grace.  The theology gets complicated here (and is a point against the futurist view).
One key point:  they are numbered.  To be numbered in Israel is to be ransomed in Israel.  See Exodus 30:12-15.  They are also sealed;  somewhat parallel (historicists says exactly so) to to sealing of the Christian with the Holy Spirit.