Hear, Israel: Yahweh is our God, Yahweh is one. (Deuteronomy 6:4)
|Yahweh / Tetragrammaton|
|SERMONS, ESSAYS AND OPINIONS|
The word "Yahweh" is also sometimes referred to as the Tetragrammaton. Tetragrammaton is a Greek word meaning "four letters" and so this term is used because "Yahweh" is spelt in Hebrew with four letters: yod, he, waw, and he.
The Masoretic text of the Old Testament shows Hebrew words with the vowels of the words adonai or elohim and this lead to the mis-transliteration of Jehovah in the 19th century. The original vocals are known from the the ancient Greek translation the Septuagint.
God Himself referred to himself as Yahweh in the Old Testament: "This [YHWH] is my name forever, and this is my memorial to all generations." (Exodus 3:15)