By suffering, the servant will learn the true meaning of obeying the LORD. Although he is innocent, he will take the punishment for the sins of others, so that many of them will no longer be guilty.
So Christ died only once to take away the sins of many people. But when he comes again, it will not be to take away sin. He will come to save everyone who is waiting for him.
Christ carried the burden of our sins. He was nailed to the cross, so that we would stop sinning and start living right. By his cuts and bruises you are healed.