An Abecedarian of Sacred Trees - Hardcoverby Mark G. Boyer (Author) Every person has seen a tree and maybe planted or climbed one! In all world religions, various trees are considered sacred. Trees have the ability to help us reach wholeness if we learn their wisdom and integrate it into our lives. This abecedarian a book whose contents are in alphabetical order explores the spiritual growth that is possible by reflecting on the wisdom of woody plants, which help humans experience the divine.