Tetragrammaton Sterling Silver pendant

The four letter tetragrammaton (literally, `four letters`) is the true name of the God of the Hebrew scriptures. Its pronunciation is considered to have great power, and is never spoken aloud, save for once a year, in the inner sanctuary of the Temple during the rites of Yom Kippur. In written scripture, it is given the vowel markings and pronunciation of the word Adonai, lord, leading to the common Christian mispronunciation of the name as Jehovah. It is commonly referred to as "HaShem," the name.