Christ’s work on the Cross was an act of grace and forgiveness for all humanity from God the Father. Never before in scripture do we see the God’s forgiveness towards humanity, that is without works (the law). Hosea 2:4 says that the just shall live by faith. Still the only to be just was to be under the Old Covenant.
Christ took all sin upon Him at the Cross. Gal 1:4, Col 2:11, 2 Cor 5:17-21, 1 Jn 3:5-10, Isa 53:12
The weight of sin that was upon Christ during His sacrifice, just like an olive press, it (the weight of sin) pressed out of our Savior, His best, our Salvation.
Sin cannot abound where there is righteousness, so, when Christ bore our sin His righteousness poured out of Him as our redemption.
When we are baptized in Christ our sin is buried with Christ. Rom 6:6
When Romans 6:6 says that our old man is crucified with Him, the original Greek text uses the fraise, the old one of us WAS (past tense) impaled. Christ’s death impaled, nullified the sinful man, it is now up to us to give Him our old man so that we sin no more.
Christ bore all sin on the cross, leaving us with option to give our sins to Him and live a sin free life, or to keep our sin as a crutch to keep us feeling inferior or not good enough to claim our inheritance.