Although the Qur'an of Islam lists ninety-nine names for God, it says most emphatically that la ilah illa' Allah—"there is no God but Allah." Allah is not so much a name as a title. The word means "the God," and it is the name revealed to the prophet Muhammad of the god worshiped by other "people of the book"—that is, Christians and Jews—although they use other names.
Because the Qur'an cannot be translated—that is, any translation is considered merely a study aid, not the true Qur'an—these words are an approximation, but they carry the weight and the essential meaning of Allah.
There is no god but he; That is the witness of Allah, His angels, and those endued with knowledge, standing firm on justice. There is no god but he, the Exalted in Power, the Wise. (Qur'an 3:18)
He it is Who created the heavens and the earth in Six Days, and is moreover firmly established on the Throne [of Authority]. He knows what enters within the earth and what comes forth out of it, what comes down from heaven and what mounts up to it. And he is with you wheresoever ye may be. And Allah sees well all that you do. (57:4)
To Allah belongeth all that is in the heavens and on the earth. Whether ye show what is in your minds or conceal it, Allah calleth you to account for it. He forgiveth whom he pleaseth, and punisheth whom He pleaseth, for Allah hath power over all things. (2:284)
He is the First and the Last, and the Outward and the Inward; and he is the Knower of all things. (57:3)
name of god in Islam. Formed from Arabic ilah, (“divinity”) prefixed by the definite article al-; among the Aramaeans, it is alaha. Allah as the supreme god was known among the northern Arabs before Islam. The concept of Allah as the only god, creator of the world, on whom everything depends, was established in the early period of Islam, specifically in the Koran.