Jesus was not referring to the soul, which is the mind
and the emotions and the will of an individual.

Spiritual life is not born of culture or even religion.
Jesus said we are to be born again, John 3:1,7.

In the beginning of our spiritual life, our spirit received God's life.

For as many as are led by the Spirit of God,
they are the sons of God, Romans 8:14

Only through our spirit can we keep communication with God
for information, guidance and fellowship.

Samson came to the point in his life where his spiritual life had been abandoned to lust of the flesh and the pride of life. He broke his Nazarite vow and lost his communication with God.

When communication among the spirit, soul and body of a person breaks down,
they return to where Adam was when he rebelled in the Garden;
he loses communication with God.

The five senses must be spiritual subjected to the spirit of mankind.

The human spirit is the king of the body.

The human spirit is the engineer of the human personality.

For they that are after the flesh do mind the things of the flesh;
but they that are after the Spirit the things of the Spirit.
For to be carnally minded is death; but to be spiritually minded is life and peace. Romans 8:5-6

Endeavoring to keep the unity of the Spirit in the bond of peace.
There is one body, and one Spirit, even as you are called in one hope of your calling;
One Lord, one faith, one baptism,
One God and Father of all, who is above all, and through all, and in you all, Ephesians 4:3-6.

Only the spirit of man can possess the nature of God, Romans 8:15.

Only by our spirit can God's presence be manifested in us, Romans 8:16.

God's Spirit guides our spirit, Genesis 3:8.

 For as many as are led by the Spirit of God, they are the sons of God, Romans 8:14.

The body is a servant to obey the soul
and the soul must be servant of the spirit.

The body fell in the Garden of Eden and death came to it.

The soul, its desires, wishes and ambitions, fell with Adam in the Garden of Eden and is opposed to God and to the human spirit.

Religion is of the soul, it doesn't change a person's nature.

When our spirit touches God's Spirit and His Spirit quickens our spirit, we become a renewed spirit.

The life of the spirit is only dominant after the
conquering of the soul life, Romans chapters 7 & 8.

Only the soul functions in those who are not born again.