That's correct. That's what being "born again" and "regeneration" are all about. Giving life to a dead human spirit.
No, they were speaking of themselves. Were those speaking in Scripture saved or unsaved people?
What did Jesus tell the Samaritan woman about how to worship God? John 4:24. They must worship IN SPIRIT and in truth.
That means they MUST have a human spirit in order to worship God. Unsaved people need to be regenerated in order to worship God.
I have a problem with the proposition people do not have a spirit.
If you read scripture, spirit and soul are used interchangeably. The spirit of a person is their inner being or
consciousness. There is no scripture which says this exists separate from our bodies, though we know it
exists within everyone.
Often the term spirit is used to describe how they are feeling, in good spirits or bad spirits.
Now when Jesus says in spirit, I read this to mean from the heart, with all that they are, not just words
or performance.
Now there is gnostic teaching about being born from on high with an eternal spirit that enters the body
through faith. I saw a tv program where a "prophet" asked people to pray for this eternal spirit to enter
them now. To me this was absurd, and simply meaningless.
Jesus talked of Peters revelation that He was the Christ, the Messiah was only possible because of
the Father revealing it to Him. Now as I said before the new covenant is an intimate relationship with
God, where the holy of holies now dwells within.
This is the born again experience, which the apostles testified to happening to the gentiles, which they
had only seen before among the jewish believers.
So when we talk about the old testament, we are not talking about this intimacy, but a following of law
and obedience with sacrifices to appease sin. It is these people who talk about having a spirit.
Now if one says they are actually born again, then what is new about the new covenant, and the relationship
with God, that the indwelling Holy Spirit provided.
The reason why the curtain was torn in two, was to demonstrate such a change in Kingdom relationship.
If you want to propose something else, feel free, but this is my observations and convictions based on
scripture and teaching. God bless you. Praise the Lord we have salvation through the cross and confirmed
by the Holy Spirit in our hearts daily.