I can say this. Before the new covanent that went into effect (Christ nailed to a cross) every year the High Priests of the 12 tribes would go into a special place in the temple to make attonemnet for the sins of the people by sacraficing an animal. It says only blood can attone for sins, and there it was. The only problem was that as soon as that was over, it was back to business as usual, and folks were still condemned. The 10 commandments had more than one purpose.
1. Lay down the law for the people of God.
2. A roadmap to Christ. In other words, you would see that there is no way you can keep the commandments, because if you break one, you may as well have broken them all! So you would see the need for Christ. Name one person who kept the commandments? There was only one. Christ. And he was the only worthy sacrafice for the sins of man. The blood of bulls and goats couldn't attone (sp) for our sins, but the blood of Christ did, and totally! It's up to the individual to accept this forgiveness by faith. Faith is the key. When we are weak, it is only the Faith that can sustain us.