Where did the "exchange" of the Exchanged Life
occur?
The answer to this question lies in the following verse, "I
have been crucified with Christ; it is no longer I who live, but
Christ lives in me; and the life which I now live in the flesh
I live by faith in the Son of God who loved me and gave Himself
for me." (Galatians 2:20) The exchange occurred on the cross
through what is referred to as co-crucifixion. The believer was
crucified with the Lord on the cross. Therefore Paul exclaimed,
"It is no longer I who live but Christ lives in me!"
This is the most definitive statement of the exchanged life in
the Scripture. Lets look more closely at Paul's life and beliefs
concerning this exchange.
What specifically was exchanged?
At the cross Paul exchanged his Adamic spirit for a new spirit
in Christ. Paul exchanged his life as a self-righteous Pharisee
for the righteousness of Christ. This was more than a change of
mind for Paul, and it was more than just a new belief or doctrine
for Paul. Paul believed that the death and resurrection of Christ
brought an end to the Adamic Paul and brought into existence the
Christ-empowered Christ-indwelt Paul. The exchange of Paul (the
Paul with Adam life) for Christ life, however, did not eradicate
the person known as Paul, because he goes on to say, "the
life I now live in the flesh", meaning that there was a pre-crucifixion
Paul and a post-crucifixion Paul. Paul, possessing his new life
in Christ, gloried in the Cross, "But may it never be that
I would boast, except in the cross of our Lord Jesus Christ, through
which the world has been crucified to me, and I to the world."
(Galatians 6:14) The cross cut off the control that the world
had on Paul, therefore he boasted in the cross. There are basically
two parts to a cross experience: pre-cross and post-cross. Let's
look at the pre-cross or death side of the cross.
What does Paul teach regarding his death with Christ?
"Knowing this, that our old man was crucified with Him, that
the body of sin might be done away with, that we should no longer
be slaves of sin." (Romans 6:6) What does this mean? Paul's
body could not have been crucified at the same time that Christ
was crucified. His soul (mind, will, and emotions) were not crucified
with Christ. What part of Paul was crucified according to this
scripture? Only the spirit of Paul qualifies as the old man. Only
Paul's spirit or old man was crucified. This leads us to the obvious
question, 'What is the old man?'
What is the old man?
The old man was the Adamic Paul, or the spirit of Paul, that was
dead in sin prior to his salvation. Paul inherited this old man
when he was born into the human race. Romans 5:19, "For as
through the one man's disobedience the many were made sinners,
even so through the obedience of the One the many will be made
righteous." At the cross Paul's old man died and was buried
with Christ. This can be seen graphically in the following illustration
(#1).

What does Paul teach regarding his new life in Christ?
Now let's look at the post-cross or the life side of the co-crucifixion
experience. Since our old man has died with Christ on the cross
and was buried with Him, it is essential to note that we have
also been resurrected with Him. Ephesians 2:5-6, "even when
we were dead in our transgressions, made us alive together with
Christ (by grace you have been saved), and raised us up with Him,
and seated us with Him in the heavenly places in Christ Jesus
. ." While it may be difficult to comprehend the spiritual
fact that believers have been resurrected with Christ and seated
with Christ in the heavenlies, it is nevertheless true. This resurrected
life (in the believer) is what the believer and the world is really
seeking. Only His life brings joy, contentment, power, and authority.
This can be seen graphically in the following illustration.

What does the term exchange mean?
One of the Greek words which includes the term exchange is the
word reconcile. The Greek word translated reconciled is the word
katallasso, which is a compound word combining kata, meaning different,
and allasso meaning to change, make different, or to exchange.
Vine's Bible Dictionary, page 260, says that "katallasso
properly denotes to change or exchange especially of money; hence,
of persons, to change from enmity to friendship, to reconcile."
By definition, in order for an exchange to occur there has to
be the giving up of an old life and the receiving of a new life.
This is demonstrated in the following illustration.

In the same text where we find the teaching of Paul about becoming
a new creature in Christ (II Corinthians 5:17 "Therefore
if anyone is in Christ, he is a new creature; the old things passed
away; behold, new things have come."), Paul also teaches
about reconciliation through the Cross. "Now all things are
of God; who has reconciled us to Himself through Jesus Christ,
and has given us the ministry of reconciliation, that is that
God was in Christ reconciling the world to Himself, not imputing
their trespasses to them, and has committed to us the word of
reconciliation . . . . . . For He made Him who knew no sin to
be sin for us, that we might become the righteousness of God in
Him."
Now lets look at the change from enmity (towards God) to the friendship
aspect of the exchange. We have full biblical authority to say
that God reconciled believers through the Cross by exchanging
their spiritual Adamic nature for a spiritual Christ-like nature.
The Cross exchanges our life in Adam for our life in Christ. This
is represented by the following illustration.

This is also represented in the concept of the exchange of our
sin (sin nature) for His righteousness (righteous nature). The
result of this exchange is that believers now have a new nature,
which is the new creation.
Paul makes a similar point in Colossians where he uses a more intense form of the word katallasso by adding the prefix apo, meaning completion. The word apokatallasso means to fully reconcile. Here is the way Paul used this word. "And by Him (Christ) to reconcile all things to Himself, by Him, whether things on earth or things in heaven, having made peace through the blood of His cross. And you, who once were alienated and enemies in your mind by wicked works, yet now He has reconciled (apokatallasso ) in the body of His flesh through death, to present you holy, blameless and irreproachable in His sight -". (Colossians 2:20-22) Paul is clearly saying that the exchange of our sin for Christ's righteousness, our Adamic nature for His nature, is so complete that it has apokatallasso (fully reconciled) us to God!
Now lets examine what would be true if the exchange had not occurred
on the cross. If there was no actual exchange (old man for Christ'
life) on the cross, then ultimately there is no apokatallasso
or full reconciliation with the Lord. There is no new overcoming
life. There is essentially no hope!!
What is one of the practical results of this exchange? We have
His nature and life within us to deliver us from bondage to sin's
power which we will deal with in the next article.