Intriguing but I'm not sure what that means
Part of an essay I wrote long, long ago ...
Part of the obscurity of scripture is that we no longer read the language of symbology, for symbology (like geometry) is a sacred art in that it is, at every level, a means by which the Divine communicates with the mundane world. The tree, understandably, is a symbol common to tradition, and the 'Tree in the Midst' occurs in many, including Qabbalistic and Moslem esotericism, as well as many ancient mythologies. Here, however, we are primarily concerned with not so much the tree as the location.
In the midst, quite simply, means the tree stands at the centre, the axial point, of paradise. It is important to realise that we are now talking of the second chapter of Genesis, so whereas the first concerned creation as such, the second concerns a specific domain within creation, and this is the world of man, not as he is today, but as he was intended and created, in his primordial purity. We can, using the tree as an analogy, say that Genesis 1 is concerned with the trunk, thus the verticality of creation in its entirety from top to bottom, whilst Genesis 2 deals with the branches, or rather a specific branch, and thus the horizontal axis and a given dimension or mode of being. Somewhat vaguely, however, Genesis tells us 'And the Lord God had planted a paradise of pleasure from the beginning:' (2.8) by which we can understand that this paradise was created in Genesis 1, which in turn means it transcends the human state, or rather the mode of man, in all his states of being, which are the subject of Genesis 2. Thus the tree, in the midst, is axial; it reaches up above, and its roots descend below, the paradise of Eden, the specific garden in which the primordial couple find themselves. This is further reinforced, if such was necessary, by the four rivers which flow from the centre, the four directions being forward and back, left and right, whilst the tree comprises the remaining two, up and down. One might add, lastly on this, that the fact that the rivers flow from this point, rather than through the midst, implies that the tree represents the axial point, the centre not only physically in time and space, but the centre and origin of time and space as such.
There can only ever be one centre, but there are two trees. How is it possible that two trees occupy the same central point? Because they are the same tree, but viewed from different dimensions, or rather, that is how the one tree manifests in a different and particular mode of being. The first tree therefore, the hierarchic principal tree, is the tree of life, signifying the action of the First Cause in every mode of manifestation, and this tree grows, like the beanstalk, through every level of creation, top to bottom. The second tree, the tree of knowledge of good and evil, is the manifestation of that tree in a given domain. In another paradise, it will be known by a different name.