Actually there is an aspect of that. Though only offered Himself once on the cross, there is another aspect of His offering that remains forever. He started out in the "form of God" Phil 2:6-11, but then ended up as a glorified human and no longer exists in the purely spiritual form of God. That change is permenant and forever. His very presence in Heaven as a glorified Human and lamb of God is a permanent condition. When I first read what you were saying I pictured Him doing some wierd ritual to offer himself or something. If you are still thinking that than I still disagree but there is a continual offering aspect to Him in Heaven that definitely does exist.