A prophet of God must speak in the name of God, the unique name which He gave His creation to use. What exactly is that name? Traditionally it was known as the "Tetragrammaton" (YHWH). Today we spell it Yahweh Latin Jehovah depending on which vowels are used. This is the Hebrew name for God revealed to Moses on Mount Sinai (in Exodus 3), consisting of the four consonants YHWH. We don't know what vowels were used as it was never spoken audibly, due to the fact that it was regarded by the Jews as too sacred a name to be pronounced, explains why Muhammad (pbuh) never knew God's real name as the Jews never spoke of it so he decided to call God Allah.

Allah was the name given by Pagan Arabs to one of their 360 idols that were in the Ka'ba in Mecca and the statue Allah was regarded as the best deity of the 360.

Muhammad prophet destroyed all the other statues but Allah he did not destroy and left alone.

One oriental theory is that Allah was a precious name to the Pagan Arabs so in order to convince the Pagans, Muhammad prophet decided to use this as the name of God.

In Exodus 3:1-6, 13-15, where God talks to Moses at the burning bush, we find God referring to Himself as "I am" which in Hebrew means "YAHWEH," or in English The One Who Is. This is very significant. What God is saying here is that this name signifies His complete self-existence, that He has no dependence upon any other. Being self-existent, He cannot but be self-sufficient, and therefore, all-sufficient. No-one can claim to be self-existent but God, and thus no-one can claim this name. It is uniquely His.

God continues by saying that "this is my name for ever," signifying that it is His eternal name, the name which only God can take for Himself, and the name by which the Jews in Egypt would recognize Him (see also Ps.72:17-19 and Rev. 1:8,17).

One can now see why the Jews in Palestine were so angry when Jesus made the same claim, calling Himself the "I am" in John 8:24,58. They naturally picked up stones to kill Him, as He had dared to take this name of God for Himself, and this was blasphemous, a sin which deserved the punishment of death by stoning.

Muslims are not familiar with the historical context of this name, nor the significance of its meaning, therefore they laugh when they hear Jesus referring to Himself as "I am" in John 8. It would be helpful to take them back to the Exodus 3 passage of the burning bush, since it is a story which exists in the Qur'an as well no doubt taken from the Torah.

If we were to take a survey of the names for God found in the Bible and the Qur'an, we would find a rather interesting contrast. The General name for God in Hebrew is Elohim, which is mentioned 2,550 times. In Arabic it is Allah. The Descriptive name for God in Hebrew is Adonai, meaning Lord, and is mentioned only 340 times. In Arabic the equivalent is Rabb. But the Specific and Personal name for God in Hebrew, the name which God Himself asked Moses to use when referring to Him, is Yahweh, which means "the One who Is." This name is repeated 6,823 times in the Old Testament alone! Look it up for yourself.

In the Qur'an it is not found once so ask yourself this, if YHWH does not exist in his suppose to be last revelations, how can that be given by him.

Clearly this is a created text by Muhammad and his fellow companions and also quotes taken from the Bible and misconstructed.

It is a good question to ask nevertheless as Muhammad claimed to be the ultimate prophet but did not know God's real name and is not even mentioned once in the whole Qur'an.

(note: in our English translation, Yahweh can be identified easily. Every time the word "LORD" is capitalized, that signifies Yahweh). Thus all of the ancient Biblical prophets speak of God using this name. However, this name for God is not used even once in the Qur'an, and has no equivalent in the Arabic language, the language Muslims claim God speaks.

This identifies why the Jews did not believe in what Muhammad had to say as he did not even know the name Unique name of God.