I understand your perspective better now, kari2. If I were to hold your viewpoint about Hebrews, about it not being fully the Word of God, being unreliable, then perhaps my views would change about sacrifice. 

Just to make sure that I've stated properly my thoughts on this; I believe that Jesus' sacrifice on the cross was the last one ever needed to reconcile us to God. All we then need to do to become a believer, and be able subsequently to stand in God's pure and holy presence, is to apply that sacrifice to ourselves once. In John 3, Jesus describes this event as being born again. 

Once we have done that, the HS has entered us and taken up residence within us. As a result of this, God's works will flow from us naturally throughout our lives, just as Jesus describes it in John 7;

"Whoever believes in me, as the Scripture has said, ‘Out of his heart will flow rivers of living water.’"