God made man in his own image, but not of the same substance that he possesses. Our Creator is composed of spirit and is eternal. Humans were made, however, out of the ground or organic substance that constitutes the earth. Adam only became a "living being" (but not an immortal soul) when God breathed life into him (Genesis 2:7).
Shortly after the creation of the first two humans, God allowed Satan to tempt them. Eve told the devil that her and Adam were instructed not to eat or touch any of the tree of the knowledge of good and evil's fruit or else they would DIE (Genesis 3:2-3). Satan's response was that they would NOT die (verse 4)!
Now, IF man were given an immortal soul that lives on after death - meaning that he continues to live except in another form - then one has to admit the devil told Eve something true! God's judgment of Eve would then not be righteous since part of what she did was choose to believe the truth! However, if humans did NOT possess something that remains conscious after death, then the devil LIED to Eve regarding the consequences of taking the forbidden fruit.
Here is something more to consider. After his creation had sinned, God's justification for casting them out of the Garden was "lest he (Adam and Eve who had just rejected God's way of life) put out his hand and take also of the tree of life, and eat, and live FOREVER " (Genesis 3:22).
However, wait a minute! If man, when he was created, was given a spiritual essence or soul that was IMMORTAL then God's concern makes no sense! His barring them from the Tree of Life would NOT make a difference since Adam and Eve already possessed something that gave them life eternal. In other words, eating of the tree of life would not have given Adam and Eve something they did not already have!
If, however, Adam and Eve did not possess something that allowed them to live forever, then God's concern about them acquiring this ability is justified. He did not want his greatest creation, in a rebellious state of mind like and exist forever in unhappiness and misery.
Humans, simply by virtue of their birth, do not possess ANYTHING that is immortal. The Bible is crystal clear that the ability to live forever is a gift from God to those who live a life obedient to him (1Corinthians 15:50-55, 2Timothy 1:9-10, Romans 2:7, 6:23, etc.).
Is it in the Bible?
Interestingly, the terms "immortal" and "immortality" are not found in the Old Testament, either in our English translations or in the original Hebrew text.
The word "immortal" is used only once in the entire Bible in translations such as the NKJV, NIV, NASB and others. It is found in 1Timothy 1:17 where it is used to refer to one of God's (not man's) attributes. The original Greek word from which we get it is aphthartos (Strong's Concordance #G862). It occurs only six other times (Romans 1:23, 1Corinthians 9:25, 15:52, 1Peter 1:4, 23, 3:4) and is usually translated as 'incorruptible,' meaning something that can never decay or perish, something that endures.
The attribute of having immortality is NEVER applied in the Bible to anything the average human possesses RIGHT NOW on planet earth. This is diametrically opposite the teaching that every human has a soul that continues to live after death.
It was after God brought forth man out of the dirt and gave him life that he became what the KJV calls a "living soul" or a 'living being' according to the NKJV, NIV, NASB, HCSB and other translations, and 'began to live' in the TEV translation. The Hebrew nephesh (Strong's #H5315) is the word translated as 'soul' and 'being' in the above Bibles. It is used to refer to fish (Genesis 1:20), birds (verse 22), cattle and other animals (verse 24) and of course man (Genesis 2:7).
The Bible does not teach man has or possesses a soul, but rather that man in his entirety IS one! Psuche (Strong's #G5590) is a Greek word that is virtually equivalent to the word nephesh in the Hebrew. It is the only New Testament word translated as "soul." It generally means a living, breathing creature, but also adds the implication of being a 'living' creature.
Unfortunately, studying the idea of a soul in the New Testament is complicated by the inconsistency of Bible translations. For example, the NKJV renders the Greek word psuche TWO different ways in two verses. In Matthew 16:25, psuche is translated as the English word LIFE. In the next verse, psuche is translated as the word SOUL!
The same translation error is also committed by the NIV, NASB, NLT and others for the same verses. More accurate translations like the NRSV, HCSB, HBFV and other consistently use the word 'life' for all four occurrences of psuche in Matthew 16:25-26.
What is man?
The Bible defines Man as a living being, life, etc. that is MORTAL. Man has never had an immortal soul that allows him to live past death. The only means by which man can live into eternity is to repent of his sins, accept Jesus as his Savior, become baptized and receive God's spirit, then live a life of overcoming until death.