The high priest would enter the Mosty Holy Place once a year, on the day of atonement, and offering forgiveness of sins for himself, and on behalf of the people. The way to receive forgiveness was through the sacrifice of animals, the practice God established for His people. For without the shedding of blood there is no forgiveness of sins. Jesus because our Great High Priest because He sacrificed Himself for us, to bring us forgiveness. His death on the cross was our Day of Atonement as Jesus died for the sins of the whole world once and for all. For without the shedding of blood there is no forgiveness of sins.