If you're talking about Gen 2:17, when God says Adam will surely die the moment he eats from the tree of good and evil, God couldn't possibly be referring to a literal death, because Adam doesn't literally die that moment. Indeed, later in the Bible people are referred to as descendants of Adam.
That point is a bit difficult to refute. I see that it hasn't been.
Note that Black felt the need to add words to the verse. He wrote that "Adam will surely die the moment he eats from the tree...." The Bible doesn't include the words "the moment."