he shall offer a male without blemish.
The offering does not die because there is anything wrong with it. It is not paying for its sins, so that it can die on behalf of someone else. This is the picture of Jesus the offerings have. Jesus did not die because of his sins, he didn’t have any, thus he was able to give his life for us. If he had sin in his life, if he were somehow unclean, he could not have died for us, because death would have been required of him. Thank God Jesus lived the life we couldn’t live and died the death we should have died.