(2Co 5:14) For the love of Christ constrains us, having judged this, that if One died for all, then all died;
(2Co 5:15) and He died for all, that the living ones may live no more to themselves, but to the One having died for them and having been raised.
(2Co 5:16) So as we now know no one according to flesh, but even if we have known Christ according to flesh, yet now we no longer know Him so.
(2Co 5:17) So that if anyone is in Christ, he is a new creation; the old things have passed away; behold, all things have become new!
(2Co 5:18) And all things are from God, the One having reconciled us to Himself through Jesus Christ, and having given to us the ministry of reconciliation,
(2Co 5:19) as, that God was in Christ reconciling the world to Himself, not charging their deviations to them, and having put the Word of reconciliation in us.
(2Co 5:20) Then on behalf of Christ, we are ambassadors, as God is exhorting through us, we beseech on behalf of Christ, Be reconciled to God.
(2Co 5:21) For He made the One who knew no sin to be sin for us, that we might become the righteousness of God in Him.
Here is a few more verses surrounding the subject. Did you catch the 19th verse, "not charging their deviations to them". When Christ is in us, truly, we must be a new creation, because our carnal mind is an enemy to God. Anyone who is honest can see this is true, when we look and see how we are now compared to what we were, big difference.
We are reconciled by His death, and we are saved through His life:
(Rom 5:10) For if while being enemies we were reconciled to God through the death of His Son, much more, being reconciled, we shall be saved by His life;
(Eph 2:
For by grace you are saved, through faith, and this not of yourselves; it is the gift of God;
(Eph 2:9) not of works, that not anyone should boast;
(Eph 2:10) for we are His workmanship, created in Christ Jesus unto good works, which God before prepared that we should walk in them.
Hope this helps, God bless.
Gary