Adam and Eve; Satan and Lucifer - Angels in the Garden
I will be as brief as possible, so you will need to look up the bible verses yourselves.
Trees, on many occasions, represented powerful beings or nations in the bible.
It is only through God's Word that we are saved, i.e. Jesus is our tree of life.
God is Father, Son(Word), Holy Spirit.
Man is created in God's image, Man's word comes out from us but what is the spirit.
Spirits are referred to as Angels in some verses, i.e. ministering spirits.
Another verse says that our angels are before God and our body is a temple of the Holy Spirit.
The chief of the angels is Michael, which translates as like God. Michael is God's Holy Spirit as Jesus is God's word.
Point being Man has an angel, a male angel for a man and a female angel for a woman.
There were two powerful angels in the Garden, Adam's angel(Lucifer) and Eve's angel (Satan).
These were the trees of the knowledge of good and evil that Adam and Eve were told not to consume (join together as one). Bible verses indicate that Eve lusted after the forbidden fruit, Adam's angel, and wanted to join with Lucifer, which she did, and convinced Adam to join with Eve's angel "Satan", as they were told they will become like God knowing good and evil.
A male angel joining a man is good, a male angel joining a woman is bad, as it made the woman masculine. The same applied with the female angel joining with Adam, which emasculated him and led to a lot of confusion in the sexes.
End result was that the angels no longer wanted to serve Man, but wanted Man to serve worship them; i.e. Satan said to Jesus, 'If you worship me I will give the world to you'.
Jewish lore states that Eve was not Adams first wife (joining) but Lilith(Satan) was and also Cain was not a child of Adam's but of the joining of Lucifer and Eve. Note Genesis says that seed of the serpent and Eve's seed would be in conflict. Also Eve states that Cain was produced by the help of the lord, i.e. Lucifer. Cain then kills Abel.
Later, we're told in Genesis that other angels (termed sons of God as they were created directly by God, like Adam was, except they were angels) started creating more of these halfbreed children between human women and angels. These children were called Nephilim, and were evil powerful mortal beings.
These angels that created these half breeds were chained up in hell, and we read in Revelation that the king of the pit is called Appolyon which means Destroy (Lucifer).
Also there is mention of the Queen of Heaven in the Old Testament, who is Satan.
The half-breeds were drowned in the flood. Being half angel and half Man the physical part died, but their spirits lived on and are known as unclean spirits or demons. These demons will possesses anyone that give into them and will join them in their bodies, as their natural state was in a body until that body was drowned.
Revelation also states that God's kingdom will come to the earth again and make God's home with those that follow God's Word - Jesus restoring Eden.
When Mankind joined with the wrong gender angels their angels left them and no longer the covering of their angels was on them (they were naked) and the first thing Adam and Eve wanted to do was hide from God because they were only shadows of what they were. God gave them skins to wear, our mortal bodies that cover our souls.
Note Paul says our bodies are but an earthly tent and he longed for his eternal body.
One day we will have our eternal bodies covered by our angels but for now we have this tent to learn to love God through Jesus who died for our sins so that we can live through Him.