Inner Worlds of Jewish Prayer: A Guide to Develop and Deepen the Prayer Experience by DovBer Pinson,

Inner Worlds of Jewish Prayer: A Guide to Develop and Deepen the Prayer Experience by DovBer Pinson, is his finest work.  Rabbi Pinson’s books have been, for the most part, small works on some aspect of Jewish practice, always filtered through the lens of non-duality.  In this work, Rabbi Pinson uses that lens to plumb the depths of the siddur, the prayer book.  Pinson moves on many levels.  The deepest and richest is the kabbalistic meanings of the passages of the prayer.  He explains the  mystery of the words of prayer; they are mighty in a literal sense, but render the cosmos whole in mystical sense.  But always, they are about the individua'ls quest for devekus, or throwing off the burden of the perceived self to merge with G-d, the Greater Whole.