Yahweh (yä′wĕ) is the proper name in the Old Testament for the God of Israel and Judah whom they consider "the One True God. " It is a modern reconstruction of YHWH, the ancient Hebrew ineffable, unutterable name for God, not to be spoken because of its sacredness. Other forms are Jah, Jahve, Jahveh, Jahweh, Jehovah, Yahve, Yahveh, and Yahwe.