A modern transliteration of the Hebrew word translated Jehovah in the Bible; - used by some critics to discriminate the tribal god of the ancient Hebrews from the Christian Jehovah. Yahweh or Yahwe is the spelling now generally adopted by scholars.
Jah or Yah (Hebrew: יָהּ, Yāh) is a short form of יהוה (YHWH), the four letters that form the tetragrammaton, the personal name of God: Yahweh, which the ancient Israelites used. The conventional Christian English pronunciation of Jah is , even though the letter J here transliterates the palatal approximant (Hebrew י Yodh).
a name for the God of the Old Testament as transliterated from the Hebrew consonants YHVH
Yahweh was the national god of Ancient Israel. His origins reach at least to the early Iron Age and likely to the Late Bronze Age.