The teaching of Christ is included in its entirety in the few phrases of the "Our Father who art in heaven". This is what the Master Omraam Mikhael Aivanhov reveals to us in this book. A Mystic, he says, acts like nature. Look: all this miracle that is a tree, for example, with its roots, trunk, branches, leaves, flowers, and fruits, nature manages to summarize it in an excellent way in a microscopic seed that is then planted. Jesus did the same thing: he wanted to summarize all the knowledge he possessed in the "Our Father" with the hope that people who would recite or contemplate it would "plant" this seed in their soul, water it, protect it, cultivate it so that they would discover this immense tree of the Science of Mysteries that He left us."