The instruction that God gave Adam was as simple as sunlight. No tricks. Yet it was crucial to the good continuance of life, the blessed relationship of the Creator to the created.    "But of the tree of the knowledge of good and evil you shall not eat for in the day that you eat of it you shall die."   Obedience was essential to the preservation of life. As simple as sunlight.   But temptation beclouds things, making simplicity seem subtle and suspicious after all. The goodness of God can be drawn in a few strokes. But the sin of the children takes longer to tell since we (like Eve) do more than remove ourselves a world away from God; we must also excuse the removal and deceive ourselves in the process.