…and with His stripes we are healed. – Isaiah 53:5

And that He died for all, that they which live should not henceforth live unto themselves, but unto Him which died for them, and rose again. – 2 Corinthians 5:15

(T)hose who have believed in the stripes of Jesus are witnesses to the instant and perfect efficacy of the medicine. We can, many of us, speak from experience, since we can say that “we are healed.” HOW are we healed?

Well, first, our conscience is healed of every smart. God is satisfied with Christ and so are we. If, for Christ’s sake, He has put away sin without dishonor to Himself, then are we, also, perfectly content and full of rejoicing in the Atonement and we need nothing else to keep our conscience quiet.

By these same wounds of Christ our heart is healed of its love of sin. It was once in love with sin, but now it hates all iniquity. If our Redeemer died because of our sin, how can we live any longer therein? All our past thoughts concerning sin are turned upside down or reversed. Sin once gave us pleasure, but now it gives us the utmost pain and we desire to be free from it, and to be perfectly holy—there is no evil that we would harbor in our bosoms. It did seem an amazing thing that we should look to Christ and so find pardon and that at that same moment we should be totally changed in our nature as to our view of sin, yet it did so happen! While sin was on us, we felt as if we had no hope and, therefore, we went on in sin. But when sin was pardoned, then we felt great joy and, consequently, gratitude and love to God. Our cry is, “Death to sin, now that Christ has died for sin!” “If the One died for all, then all died” and, as in Christ we died to sin, how shall we live any longer therein? ~ C.H. Spurgeon

https://www.blueletterbible.org/comm/spurgeon_charles/sermons/2499.cfm