18. Speech in holiness; that is, words of Torah, prayer, and fear of HaShem, are very high and precious, because holy speech is an aspect of the Divine Presence, an aspect of the revelation of HaShem's kingdom and faith. It is [also] an aspect of the spirit of the Messiah, an aspect of ruah hakodesh, an aspect of the resurrection of the dead, an aspect of the unification of the Holy One Blessed is He and His Divine Presence. (From Likutei Moharan I, 78)