Looking at this quotation again more carefully, it does seem to suggest a three part composition of man.
Ghost wrote:
the view that the body is the “temple of God,” the place where the soul dwells, the site of the fusion between spirit and flesh that is the human person. Suicide is wrong in part because it destroys the body that is the seat of the soul.'
Okay. Paul says the believer's body is the temple of the Holy Spirit.
The Holy Spirit comes in to dwell in man by being one spirit with his human spirit not his human soul.
Verse 17 says the one joined to the Lord has had his human spirit united with the Holy Spirit to be one spirit.
This means actually one part of the believer's being is God.
I said that. Yet I did. To be joined to the Lord Jesus Christ as one spirit is for one part of your being to BE ... Jesus Christ.
Formerly your spirit was here and Christ the Spirit was there. And they were separated. But then when you are bought with the price of the blood of Jesus and JOINED to the Lord, your spirit and Jesus Christ the
life giving Spirit that He became become one JOINED and MINGLED spirit within you - deeper than your soul.
This is the holy of holies to your human temple.
I have to suspend for the moment and continue latter.
See of you can get Ghost to copy for you all the verse from 12 through 20 in First Corinthians 7. He does have somewhat of a case.
But the Christian's body is not said to be the temple of his soul but the temple of the Spirit of God. Hence the temple of the living God. See this time
Second Corinthians 6:16.
One caveat.
Sometimes it says individually each body of the believer is a temple of the Holy Spirit.
The church collectively is the temple of the living God. All the temples together forming the unique temple of the church of God.