Ayin ע represents the fountain, eye, spring. Daleth ד represents the four streams of the river of Eden. Nun ן represents the sperm and ovum.
(Hebrew עדן) Eden means “bliss, pleasure, delight.” In the book of Genesis written by Moses [Moshe], Eden is a symbol with many levels of meaning.
Of primary importance, in the book of Genesis or Bereshit, the primeval state of humanity is depicted in the Garden of Eden. This story symbolizes that when the man and the woman are performing the sexual act, they are in that moment in the Garden of Eden, enjoying that bliss, delight, or voluptuousness, and it is in that state when the serpent (Lucifer) appears in order to tempt them.