For since we are all equally forgiven the penalty of sin,
***That is, those of us who have accepted Jesus as God Himself, as Lord and Savior.
"...in Christ God was reconciling THE WORLD to himself, not counting people’s trespasses against them, and he has given us the message of reconciliation." -- v.19.
The forgiveness wrought upon The Cross is DONE, for EVERYONE, for all time, contingent ONLY upon their acceptance of it.
Our pleas on Christ’s behalf, “Be reconciled to God!” are for the lost to accept the reconciliation already purchased for them in the blood of Christ Jesus. The debt of sin has been cancelled, but the lost have to be made sensible of it, and lay claim to it for themselves.
Again, in Colossians 2:14 Paul asserts the nature of the transaction between The Father and The Son on The Cross: "He has destroyed what was against us, a certificate of indebtedness expressed in decrees opposed to us. He has taken it away by nailing it to the cross." And in what form did He nail it to The Cross? In the bodily form of Christ, Our LORD, who BECAME sin on our behalf, and God laid upon Him the penalty for all of our iniquity, to satisfy the demand of Divine Justice, so that whosoever will might become the righteousness of God.
We speak too glibly when we say "Jesus died on the cross for your sin. It's FAR more grave than that, for it was the will of God to CRUSH him [Is. 53:10]. God PERSONALLY EXECUTED Jesus at Calvary instead of us, and in that act forgiveness for all has been wholly sealed forever in the blood of Jesus, but it must be made known to the lost, and accepted in faith.