What is an overview of the way Adam and Eve ate and became like God? And the Lord God said, “The man has now become like one of us, knowing good and evil.
  (Gen 3:22)


In what way did Adam and Eve become like God, in knowing good from evil? Most answers to related questions on this site suggest that Adam and Eve already knew it was wrong to disobey God and to eat against His wishes.

In the past, I have taught others that they did not know evil 'experientially.' It had only been theoretical before. But that understanding implies that God knew sin experientially also !!

So, in some way they knew they should not eat, and after eating their knowledge changed or increased. But that new knowledge does not depend on having to sin in order to learn it.

So the only increase in knowledge that I can think of is 


  understanding (some of) the results of sin and how it affects others and God.


But I am looking for other ideas or better expressions of this idea. What is an overview of the main theological explanations of what this means?
Notice that in Genesis 3:22, God says "now the man is become like one of us," after Adam had eaten the fruit of the Tree of Knowledge of Good and Evil. God was not equating the angels with himself, so in using the plural he could only have been referring to other gods. Indeed, Keel and Uehlinger say in Gods, Goddesses and Images of God in Ancient Israel, page 2 (translated from German by Thomas H. Trapp), that recent Old Testament research, at least so far as this is carried out by German-speaking scholars interested in religio-historical questions, generally assumes that the religion of pre-Exilic Israel and Judah is to be characterised as thoroughly polytheistic.  

The Tree of Knowledge of Good and Evil was more than just, say, an apple tree placed there to see if Adam and Eve would disobey God and thereby experience sin. The ancients divided the entire world into that which was good and that which was evil, so to have knowledge of good and evil was to know everything, just as the gods did. Adam had become like the gods, except that he was still mortal. 

So that Adam would not now eat of the Tree of Life which God had also planted in the Garden of Eden, and thus become immortal like the gods, God sent Adam and Eve from the Garden and placed cherubim and a flaming sword to keep (block) the path to the Tree of Life (3:24).