WHO IS ALLAH(Good)?
We hear about Allah سبحانه و تعالى from different people defining differently based on their understandings. Based on their perception we fix our perception of Allah سبحانه و تعالى. Let us understand about Allah سبحانه و تعالى (the creator) by the best way. And the best way of understanding or knowing about Allah سبحانه و تعالى is by Allah سبحانه و تعالى Himself in the Qur’an, Prophet Muhammad ﷺ and as understood by the male and female Companions of Muhammad ﷺ.
Allah, the Supreme Being of this universe – revealed the message of truth through the Qur’an to enable us to live meaningful lives and to help us succeed in the hereafter. Reflecting on that message with an open mind and heart has allowed many from mankind to recognize and believe in Allah as the sole deity of this universe. Once our minds clearly know Allah as our creator and sustainer, we can better understand Allah’s rights over us and can also help us to worship Him the way we ought to worship Him as our creator. 
Unfortunately there are some People that wish to propagate that this word ALLAH means other than the One God of the Prophets, as if the word refers to some idol or moon god. In Arabic the generic word for deity and god is “ilah” (إله) with the dual as Ilahain (إلهين) and the plural as Aalihah (آلهة). The word Ilah in Arabic means “that which is worshiped” whether rightfully or without knowledge, thus meaning respectively the One True God, or god as in false gods. In the plural of Arabic Aalihah (آلهة) is always for the false gods and idols. To give some examples of usage we can say, for instance for the One True God, in constructions with pronouns like my God “Ilahi,” and your God “Ilahukum,” and with proper nouns like the God of Abraham “Ilahi Ibraheem.” In the following ayath we find “God of your fathers” as Ilaha aba`ika and “One God” as “Ilahan Wahidan” (إلها واحدا)
أَمْ كُنتُمْ شُهَدَاء إِذْ حَضَرَ يَعْقُوبَ الْمَوْتُ إِذْ قَالَ لِبَنِيهِ مَا تَعْبُدُونَ مِن بَعْدِي قَالُواْ نَعْبُدُ إِلَـهَكَ وَإِلَـهَ آبَائِكَ إِبْرَاهِيمَ وَإِسْمَاعِيلَ وَإِسْحَاقَ إِلَـهًا وَاحِدًا وَنَحْنُ لَهُ مُسْلِمُونَ
“Were you witnesses when death approached Jacob and he said to his sons, ‘What will you worship after me?’ They said, ‘We will worship your God and the God of your fathers, Abraham and Ishmael and Isaac, one God. And we are Muslims (in submission) to Him.” Qur’an.Surah Baqrah 2:133
Allah relates the amazement of the Arab polytheists at the claim of monotheism by the Messenger Muhammad, and what they said to him:
أَجَعَلَ الْآلِهَةَ إِلَهًا وَاحِدًا إِنَّ هَذَا لَشَيْءٌ عُجَابٌ
“ And they wonder that there has come to them a warner from among themselves. And the disbelievers say, "This is a magician and a liar. Has he made the gods [only] one God? Indeed, this is a curious thing. .” Qur’an.Surah Sa’ad 38: 4-5
The word “Allah” is the proper name of The One God. Literally it is made up of the letters “al” which is the definite article “the,” and “ilah” the word for god or God (according to context as above). Thus the word “Allah” is “al-ilah” and literally “The God,” as in the Arabic phonetic construction (ال + إله=اللَّهُ). Of course the meaning is the One and Only God and the One Lord and Creator and Sovereign of the creation.
According to Ibn Taymiyya رحمه الله, the name Allah (الله), which has the same Arabic root (‘-l-h) as ulūhiyyah, is associated with worship. Thus in Arabic, the word "Allah" means "The One who deserves all worship". This, in a nutshell, is the Pure Monotheistic message of Islam. Majmūʿ al-Fatāwa 2:456 
- Next >>