"Yod Hey Vav Hey" is a Hebrew term that represents the four-letter name of God, also known as the Tetragrammaton. It is spelled in Hebrew as יהוה and is considered sacred. The pronunciation of this name is not certain, and out of reverence, many Jewish traditions avoid saying it aloud. Instead, alternative names or titles are used to refer to God. The Tetragrammaton is highly significant in Jewish religious and spiritual practices.

As a mantra, the "Yod Hey Vav Hey" can be repeated silently or aloud during meditation or prayer. It serves as a powerful spiritual tool for connecting with the divine and cultivating a sense of presence and reverence.