What happened in the Garden of Eden? What was the fall of man?
Adam and Eve did not, until the fall, have a sense of right or wrong; this belonged to God alone.
And the LORD God commanded the man, saying, "Of every tree of the garden you may freely eat;"but of the tree of the knowledge of good and evil you shall not eat, for in the day that you eat of it you shall surely die." Genesis 2:16 and 17.
Of course, Adam DID eat of the fruit of the tree of the knowledge of good and evil, but he did not, that day, physically die. From this we would conclude that there was something else that died when Adam decided he wanted to know right from wrong. When he was created, Adam was one in spirit with God: His life was the life of the Creator, flowing through him.
We would wonder if Adam had no moral conscience, how then did he always do right, and not sin? It's one thing if a man can see where he is going, and is on a very dangerous path. He might well fall, but at least he has a chance. Yet Adam lived for an unspecified amount of time without sinning, even though he had no idea of right and wrong. How? Simply by keeping a relationship with his Creator. Adam was for sure "blind" to knowing good and evil, but there was another Tree in the Garden, and from that tree he freely ate of Life.
Well, along comes B. Al Zebub, AAL, esquire. He beguiles Eve with a half truth: If you eat of the fruit of the tree of the knowledge of good and evil, you shall be as god, knowing right from wrong. Presumably there would have been no temptation if Eve had known the whole truth: Yes, she would know right from wrong, but, as an independent moral being, she would NOT be able to choose the right and not choose the wrong. So she chooses to eat of the fruit, and Adam passively goes along with it. And that day, Adam's spirit, through which he had fellowship with his Creator, died.
Can he get it back? No. Dead is as dead does. Fellowship has been broken, and no manner of religion is ever going to put it back. If there will be restoration, the Creator Himself will provide it.
15 And I will put enmity Between you and the woman, And between your seed and her Seed; He shall bruise your head, And you shall bruise His heel." Genesis 3:15
Amen and Amen.