The other tree, the one they could eat, that is specifically mentioned in Genesis is the Tree of Life.  I have always thought in interesting that Adam and Eve were not forbidden to eat of the Tree of Life!  So, of course, the serpent did not tempt them on that one.  If we skip to the end of the Bible we find out that the Tree produces twelve crops and the leaves are for healing the nations. 

Some comparing and contrasting is in order here.  In Genesis the Tree of Life is mentioned three times, in Revelations it is referenced four times (but three thoughts), in Proverbs, it is mentioned four times, and has a possible reference in Ezekiel 47: 12.  A look at its physical location is also important.

Genesis: 2:9 – the tree’s physical location, at the center of Adam and Eve’s world (the Garden).  It is connected with a river that waters the whole earth. 

            3:22 – the command to not eat of the Tree of Life and live forever.

            3:24 – the way “back” was blocked/guarded. 

Thoughts – 1. Would eternal life have been passed on to their children?  2. It would have been horrible to live on and see all of the sins they allowed into the world.

Revelations: 2:7 – “overcomers” get to eat of the Tree.

22:2 – Its location by the River of Life on the main street in the City.  This location and river are in Ezekiel 47:12 and Zechariah 14:8. This also mentions the leaves being for healing, as does Ezekiel.

22:14 – repeats who may eat of the Tree.  Overcomers and those who “washed their robes” may be similar ideas.  This stands in contrast to Genesis 3:22 where the ability to eat of the tree is blocked.

22:19 – This is a way to be blocked from eating the fruit or leaves.  If you use the KJV the Tree is not in this verse it is a book. I do not have a great reason why it is a book, except that “paper” is from trees.  The KJV is the only translation I found that uses “book”.

Thoughts – 22:2 mentions twelve crops.  Some translations use twelve fruits.  The Vulgate has twelve fruits of the Spirit instead of nine.  My best feeling on this is it shows God’s continuous provision.  Artists, in some renditions, will also put twelve trees along the river.  I will wait to see it for myself. 

Proverbs: 3:18 – Wisdom is a tree of life.  Jews will use this to represent the Torah.

11:30 – the fruit or things the righteous do are a tree of life.   

13:12 – longings fulfilled are a tree of life.  

15:4 – a soothing tongue is a tree of life.  

Thoughts – I am viewing these four as “Leaves” on the tree of life.