The Death of Sin
The death of sin could not be accomplished except by the death of Christ Jesus our Savior, and His death could not happen except all the sins of His people be laid upon Him (Isaiah 53:6).
Since all of the sins of His people met upon the Savior, and He did in fact die under the curse of the broken law, then our sins had to die with Him; and when He arose, He came back without them.
“And ye know that He was manifested to take away our sins; and in Him is no sin.”
(1 John 3:5)
It is written that “What the law could not do, in that it was weak through the flesh, God sending His own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh” (Romans 8:3).
Note carefully the wording; it was not the Son of God Who condemned or judged sin, but that One who sent Him, God the Father, the righteous Judge. The death of Christ was a judicial act of God.
The justice of God, finding the sins of His people upon the eternal Surety, charged Him with those sins and demanded satisfaction for them.
The condemnation of our sins took place when Christ Jesus suffered, bled and died in our stead. In that way the law was satisfied, sin was expiated, forgiveness was secured, righteousness was brought in, reconciliation was accomplished, and redemption was obtained.