For a person to be able to Stand in the Presence of God they would have to be sinless. God provided the sacrifice of His Son, the Messiah as the One Sacrifice for sins forever. This finally makes sense of all the blood and smoke of ancient times. The perfect Son, Leader and Priest sealed the New Covenant between God and man for all time with His blood on the Cross.
All the Old Testament sacrifices weren’t the point. They POINTED to a God who forgives, not a god who trades sins for sacrifices. Not a god who “sells” forgiveness, but a God of loving kindness, justice and grace.
God demonstrated His grace and mercy to you by becoming your perfect sacrifice… so you can Stand in HIS Presence.