YHWH
YHWH is a Greek four-letter-word used by the Early Christian Church ‘for the four Hebrew symbols which represent the name of God’. In Hebrew, they are described as ‘Yod, Heh, Vav and Heh’.
Although the ‘Hebrews did not write down vowels… it is generally now reckoned that the name had two of them and was “Yahweh”’.
Yahweh, the God, introduced himself with this name when he was asked by Moses (i.e., Exodus 3:14, ‘And God said unto Moses, I AM THAT I AM’). In general, it is said that the Hebrew ‘Yahweh’ could be translated to ‘He Who Is’, ‘The One That Exist’ or ‘”Made-Maker”, that is, “maker of all made things”’.
Originally, it is said that the name ‘Yahweh’ appeared ‘more than 6,800 times in the Hebrew Bible’. However, ‘in later years the Jews started to custom of never saying the name aloud’, probably due to a ‘strict interpretation of God’s commandment not to take his name in vain’. (i.e., Exodus 20:7, ‘Thou shalt not take the name of the LORD thy God in vain; for the LORD will not hold him guiltless that taketh his name in vain’).
Therefore, the Jews began to use alternative words such as ‘Elohim’ and ‘Adonai’, ‘which are normally translated as “God” and “The Lord”’ (http://www.bbc.co.uk/dna/h2g2/A3477909).
As for its meaning, it is also said that the word Yahweh ‘is an imperfect form of the archaic Hebrew verb’ that means ‘to be’. More precisely, the word is ‘the abbreviated forms of the imperfect, the participle, and the perfect of the Hebrew verb "to be" (ye=yehi; ho=howeh; wa=hawah)’. In this explanation, the meaning of the name ‘would be "he who will be, is, and has been"’ (http://www.newadvent.org/cathen/08329a.htm).
Finally, the name Jehovah, ‘which appeared first among Christian scholars of the late Middle Ages’ consists of a mixture of ‘the four consonants of YHWH (JHWH in German) with the vowels of Adonai’. Therefore, it is said that ‘Modern biblical scholars, however, generally dismiss Jehovah as a misreading (or mispronunciation)’ (http://www.bibletopics.com/BIBLESTUDY/154.htm).
Reference:
l Books
Ivy Books (ed.) (1991), The Holy Bible, King James Version
Ballantine Books, New York
l Internet
BBC – h2gs (2005), The Tetragrammation (accessed 30/01/2010)
http://www.bbc.co.uk/dna/h2g2/A3477909
The Bible Study (year unknown), From Adonai to Yahweh – A Glossary of God’s Names (accessed 30/01/2010)
http://www.bibletopics.com/BIBLESTUDY/154.htm
Knight, Kevin (2009) Jehovah (Yahweh) – Meaning of the Divine Name, The New Advent – Catholic Encyclopedia (accessed 30/01/2010)