Now the serpent was more crafty than any other beast of the field that the LORD God had made.
He said to the woman, “Did God actually say, ‘You shall not eat of any tree in the garden’?” 2 And the woman said to the serpent, “We may eat of the fruit of the trees in the garden, 3 but God said, ‘You shall not eat of the fruit of the tree that is in the midst of the garden, neither shall you touch it, lest you die.’ ” 4 But the serpent said to the woman, “You will not surely die. 5 For God knows that when you eat of it your eyes will be opened, and you will be like God, knowing good and evil.” 6 So when the woman saw that the tree was good for food, and that it was a delight to the eyes, and that the tree was to be desired to make one wise, she took of its fruit and ate, and she also gave some to her husband who was with her, and he ate. 7 Then the eyes of both were opened, and they knew that they were naked. And they sewed fig leaves together and made themselves loincloths.
The Holy Bible: English Standard Version. (2001). (Ge 3:1–7). Wheaton: Standard Bible Society.
Note what Satan is doing here. He is not asking, “What did God say?” He is asking Eve to judge God. “Did God say . . .” demands Satan. It is something we ask ourselves all the time in the balance between sin and temptation. Did God really say it? It is sowing distrust of God, not disbelief. It is making us doubt God’s word itself.
Satan does not ask Adam. In fact, he asks Eve who never heard God say it because God’s command to Adam was given prior to even creating Eve. Satan asked Eve to judge her Creator on events that happened before her creation.
It is okay to be in disbelief with God. Mary was surely in disbelief when Gabriel announced that she was pregnant. But Mary did not distrust God. She knew he would work toward her benefit.