Torah, Deuteronomy 12:2: You shall utterly destroy from all the places where the nations, that you shall possess, worshipped their gods, upon the lofty mountains and upon the hills, and under every lush tree.
Mountains, hills, and trees are what people worshipped. Either they worshipped something in these places: in the lowlands or valleys, in the mountains or on the hills, etc.
A person can pray to anything. In the repertory (Homeopathic reference), where all sorts of human motives and methods of their treatment are described, very interesting impulses of a person are mentioned, for example, a prayer to the tail of the horse and other similar things.
A person is subject to all sorts of internal fluctuations; there are various doubts, forces, and twilight states in him.
People worshipped trees a lot. However, if we speak about the internal work of a person, then the tree of knowledge of good and evil is the personification of the fact that out of something grows something. That is, knowledge is the fruit of the tree.
From KabTV’s “Secrets of the Eternal Book” 6/22/16