When you say "the holy place where he does not belong", this implies that “he” the antichrist will take the place of Christ in each Christian who falls away.
The antichrist is a man, how can a flesh and blood man be in the place of Christ in all the Christians all over the world?
The holy place refers to the temple in Jerusalem, which the Jews are moving closer to building everyday.
JLB
Let me explain it this way:
When members of the Body of Christ are committing an action, that action is taking place
in the Church. If many brothers in Christ are watching pornography, for example, then pornography is in the Church. That doesn't mean that all Christians are engaging in it, just because it is in the Church, or that the porn stars are inhabiting the spirits of the Christians watching porn.
When many Christians worship the beast, the worship of the beast will be in the Church---the temple of God and the holy place---where it does not belong. Practically speaking, the person of the antichrist will replace Jesus Christ in His Church, because His Church will be worshiping the antichrist; not because the antichrist has inhabited the Christians. Does that make sense?
God would never refer to any temple that might be built in Jerusalem for the worship of
Satan (in the person of the antichrist) as the "holy place". He called a synagogue of spiritually uncircumcised unsaved Jews a "synagogue of Satan" (Rev 3:9 ESV).
Earthly Jerusalem hasn't been the holy city since the Jews rejected their God and He forsook them, nor will it ever be again. Jerusalem is referred to as "Sodom" and "Egypt" in the Revelation (11:8 ESV), because that is what it is like in God's sight, and because of the sins that are and will be taking place there and the judgments with which it will be judged by Him.
The worship of the antichrist most certainly
ought to be in a temple built for the purpose, as any temple that might be rebuilt in Jerusalem will be---for their false messiah.
The abomination of desolation "ought not to be" in the Church, which was
not built for that purpose.
God's temple is holy (1 Corinthians 3:17 ESV), and where God is not, is not holy as far as He is concerned. There is nothing about a rebuilt temple in Jerusalem that would make it any kind of "holy place". If one
is built, it will be a
Satanic place.