How can one man's death forgive sin and give Eternal Life?

Jesus was a one of a kind man.  He was not like us.  Everyone ever born was a decendent of Adam, except Jesus.  The women, Mary, who bore Him, did not become pregnant by a man's seed, but by the Holy Spirit of God.  As decendants of Adam, we are born with a sin nature.  Thus we are called Sinners, like one would be referred as a Human.  Jesus was not a Sinner, because he came into existance by the seed of God.  According to Jewish law, the only way that a person could enter Heaven and have Eternal Life was to have obeyed the whole law.  This is impossible for man to achieve, since his nature is of sin and his very nature is in vialation and seperated from God, for God cannot look at sin.  This was not impossible for Jesus, for he was the embodiment of God and Righteous in nature.  Without the shedding of blood, there is no forgiviness for sin.  On the cross, Jesus became sin, for he took on all our sins.  When he died, all the sin He had taken on was put to death, for He put to death sin on the cross, by sheddind His own blood.  You can say the very blood of God.  At the moment that Jesus died, the vail in the Temple in Jerusalem, was torn from top to bottom.  This vail seperated man from the Holy of Holies, the presents of God.  When Jesus died and put to death sin, it was now possible for man to come into the presents of God.  By believing what Jesus did and accepting what he did for you on the cross, you put yourself on the cross with him.  In doing so, your own sin has been put to death and because you are now in Jesus, He becomes your Righteousness and your vehicle in which you are now worthy to come into the presents of God.  You can now enter Heaven, for you are now quiltless to the law.  In Jesus burial, he buried sin.  When he rose from the dead by the Power and Spirit of God, He enabled all who believe and are in Him to also receive that Power and Spirit that raised Him from the dead.  Any person, who chooses so, can now be Born of Above and can become a New Creation.  In doing so, you can be changed from Sinner to Saint.