Isaiah said "in his body he bore our sin and transgressions." What happened on the outside of Christ is what what they were doing to his body (death), but it was "the sin of the world" being completely dealt with by Christ on the cross. What is "the sin of the world" it is all in Adam, the sin nature and all that sin could cause and do was dealt a final death blow, gone forever by the cross. John the Baptist said;
The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world. - John 1:29
The sin of the world is singular; in it all sin-sinning-sin nature, Satan nature-ever committed or to be committed sin was in the lamb. How is the sin of the world dealt with; by crucifying "the sin nature."
The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world. - John 1:29
The sin of the world is singular; in it all sin-sinning-sin nature, Satan nature-ever committed or to be committed sin was in the lamb. How is the sin of the world dealt with; by crucifying "the sin nature."