Featured is it Heresy to deny doctrine of original/Imputed Sin?

Man has body, soul, and spirit.
Can you provide Scripture that says otherwise:

1 Thessalonians 5:23 And the very God of peace sanctify you wholly; and I pray God your whole spirit and soul and body be preserved blameless unto the coming of our Lord Jesus Christ.

Paul refers to your whole spirit here, and not the Holy Spirit that dwells in you. He mentions the spirit, the soul and the body.
What Scriptural support can you give that we do not possess a spirit.

 

Alright, that is some progress.
The spirit remains dead. That is the meaning of Eph.2:1.
The question is: what then is meant by "dead"?

Even the unsaved person has a spirit. It is not a dead "corpse" as it has been defined. It is active, but not toward God. It is dead because it is separated from God, and alive toward the world, sin and satan. They were called "children of wrath." They were not "lifeless." They had the wrong kind of life--children of disobedience.

What did Jesus say about the unsaved Pharisees?
John 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.

And Paul in his denunciation of Elymas:
Acts 13:10 And said, O full of all subtilty and all mischief, thou child of the devil, thou enemy of all righteousness, wilt thou not cease to pervert the right ways of the Lord?
Acts 13:11 And now, behold, the hand of the Lord is upon thee, and thou shalt be blind, not seeing the sun for a season. And immediately there fell on him a mist and a darkness; and he went about seeking some to lead him by the hand.

Elymas was a sorcerer, who allowed his spirit to be used of Satan.
When the deputy (Sergius Paulus) saw what had just happened, he believed on the Lord and was saved. That is the testimony of Scripture.
He was reconciled to God.
God has given to us the ministry of reconciliation.
2Cor.5:18-20