I am thinking back to what I read in the book called The Jesus Code about the questions that Satan posed to Adam and Eve. It definitely shows how devious Satan is because his manipulation is so subtle. That one question, did God really tell you not to eat from the tree of knowledge? Okay, that was in my own words based on my wishy washy memory but its not about the exact wording but about the implication of what Satan is saying through this question. He's giving the seed of doubt and just like the seed of truth that Jesus sows, if the soil takes hold of it and let's it grow, that seed of doubt will weaken our faith and trust. Knowing that Satan will be so cunning, we have to prepare the soil in our souls each day by watering it with the truth in God's Word, fertilizing it by calling on the Holy Spirit within us and letting the light that is God pour into us. When we do this, our easy automatic answer to this question will be "Yes, he did and I will trust and obey him."
Genesis 3: 1-5
The serpent was the shrewdest of all the wild animals the Lord God had made. One day he asked the woman, "Did God really say you must not eat the fruit from any of the trees in the garden?" "Of course we may eat fruit from the trees in the garden," the woman replied. "It's only the fruit from the tree in the middle of the garden that we are not allowed to eat. God said, 'You must not eat it or even touch it; if you do, you will die.' "You won't die!" the serpent replied to the woman. "God know that your eyes will be opened as soon as you eat it, and you will be like God, knowing both good and evil."