The serpent convinced Eve to eat of the apple from the tree of knowledge. She gave the apple to Adam and convinced him to eat of it.
Then Adam 'saw' that Eve was naked, and that he was naked.
Imagine that. You figured that out nicely. Don'tcha just love metaphorical truisms? I won't even get started on the Sumerian texts that say the valley of the gods was called Eden (Ur) and the first hybrid/prototype Annunaki/Hominid was called The Adam.