Yes, so grain and animal sacrifices just didn't cut the mustard. Finally, the only acceptable host in the eyes of God was God himself, in the form of Jesus, The Lamb of God, right? And to think it was all about disobedience to God's little sting operation in the Garden. It seems to me that what really occurred is that God's sting operation failed, and instead of taking it out on his children and ultimately on his only begotten son, he could have recognized his own faulty model and forgave his innocent children. Actually, the older version has it that God DID tell A&E NOT to eat of the Fruit, but with the intention that they do, the 'Forbidden Fruit' being a symbol for Higher Consciousness, or God Consciousness, with God reappearing to A&E as a cute little serpent. IOW, God wanted A&E to share in his supreme and perfect happiness. Mystics call this sharing 'divine union'. But the priests corrupted the story to put a wedge between God and man with the concept of sin, and the notion of a blood sacrifice in the form of a crucifixion became necessary for the Gates of Paradise to once again open for all of mankind to enter. This way, the priests could extract tribute from their unwary and frightened congregations.
You see, God set up a piece de resistance, fully knowing that his curious children could not avoid partaking of the so called Forbidden Fruit. In the world of Zen, we call this a koan; a non-rational problem set up to make the rational mind self-implode.