Soul – The real person that dwells within the Body
Spirit – Our connection to God
Adam was created a Triune Being (in the image of God). When he sinned, he died, spiritually (cut off from direct communion with God) and some 900 years later, he died physically (Genesis 2-3).
Sin entered into mankind thru Adam. (Romans 5:12-15)
Since then, each person born is still a Triune Being (Body-Soul-Spirit) but the spirit is dead (separated from God).
⇒ “Quickened – to be made alive”
Ephesians 2:1 And you hath he quickened, who were dead in trespasses and sins;
Ephesians 2:5 Even when we were dead in sins, hath quickened us together with Christ, (by grace ye are saved;)
Colossians 2:13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses;
2 Timothy 4:1 I charge thee therefore before God, and the Lord Jesus Christ, who shall judge the quick (saved) and the dead (unsaved) at his appearing and his kingdom;
Only God can separate the soul from the spirit.
Hebrews 4:12 For the word of God is quick, and powerful, and sharper than any twoedged sword, piercing even to the dividing asunder of soul and spirit, and of the joints and marrow, and is a discerner of the thoughts and intents of the heart.
Ecclesiastes 12:7 Then shall the dust (body) return to the earth as it was: and the spirit shall return unto God who gave it.
The Lord Jesus said He that believeth on the Son hath everlasting life: and he that believeth not the Son shall not see life; but the wrath of God abideth on him.
(John 3:36)
It appears from the Scripture, man is born with a body, a soul, and a dead spirit. If he dies in this condition his body is disposed of on earth, his soul goes to Hell (separated from God), and his dead spirit returns to God.
(Compare Luke 16:19-31)
When man gets saved his spirit is made alive, and when he dies, his body is disposed of on earth, his soul and spirit go to be with God, Heaven.