The Tetragrammaton יהוה in Hebrew and YHWH in Latin script, is the four-letter biblical name of the God of Israel. The books of the Torah and the rest of the Hebrew Bible (with the exception of Esther, and Song of Songs) contain this Hebrew name. Religiously observant Jews and those who follow conservative Jewish traditions do not pronounce יהוה, nor do they read aloud transliterated forms such as Yahweh; instead the word is substituted with a different term, whether used to address or to refer to the God of Israel. Common substitutions for Hebrew forms are hakadosh baruch hu ("The Holy One, Blessed Be He"), Adonai ("The Lord"), or HaShem ("The Name"). 
The Yod-Hay-Vod-Hay System also correlates to taking over all of the numerical four and master builder 22 constructs that are used in Morphogenetic Fields as blueprints for matter. Each of the Yod-Hay-Vod-Hay pillars relates to one of the directions North, South, East or West, and the governance over its Fallen Angelic Hierarchy that administers to the Cosmic Clock or timelines. Calling on this Yahweh System through the Yod-Hay-Vod-Hay Matrix, or Tetragrammaton, is common in “Squaring the Circle”, which is how an occult ritualist sets the directions in an energetic space. This may be used in some New Age practices, or in Black Magic rituals that are bound to the Hebrew-based systems and the mystical Kabbalah or other Mystery Schools or religions that worship Yahweh.