Allah

Who

 Allah, Arabic Allah (“God”), is the one and only God in Islam. 

In Islam, Allah is the unique, omnipotent, and only deity and creator of the universe and is equivalent to  God in other Abrahamic religions. Allah is usually seen as the personal name of God, a notion that became disputed in contemporary scholarship, including the question, of whether or not the word Allah should be translated as God.

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How

Allah is neither male or female (who has no gender), but who is the essence of the "Omnipotent, Selfless, Absolute Soul (an-Nafs, النّفس) and Holy Spirit" (ar-Ruh, الرّوح) - notably among the 99 names of God, "the All-Holy, All-Pure and All-Sacred" (al- Quddus)

In the Ayat ul kursi ("Verse of the Throne"), which is the 255th verse and the most powerful verse in the longest chapter (the 2nd chapter) of the Qur'an, Al- Bakrah ("The Cow") states:

"Allah! There is no deity but Him, the Alive, the Eternal. Neither slumber nor sleep overtakes him.

Unto Him belong whatsoever is in the heavens and whatsoever is in the earth. Who could intercede in His presence without His permission?

He knows that which is in front of them and that which is behind them, while they encompass nothing of His knowledge except what He wills.

His throne includes the heavens and the earth, and He is never weary of preserving them.

He is the Sublime, the Tremendous."

What

Allah is the originator of both before and beyond the cycle of creation, destruction, and time, - notably among the 99 names of God, "the First, Beginning-less" (al- Awal), "the End/ Beyond ["the Final Abode"]/ Endless" (Al- Akhir) and "the Timeless" (as- Sabur)

Allah is the creator of the universe and the judge of humankind. "He is unique (waḥid) and inherently one (aḥad), all-merciful and omnipotent. "No human eyes can see Allah till the Day Of Judgement. The Qur'an declares "the reality of Allah, His inaccessible mystery, 

Allah sends 124000 prophets on earth to educate human beings about the universe and the right way of living on earth.

For educating humans, Allah also revealed four Holy books on the Prophets of different nations.

1. Muslims believe in angels, unseen beings who worship God and carry out God’s orders throughout the universe. The angel Gabriel brought the divine revelation to the prophets.
2. Muslims believe that God revealed holy books or scriptures to a number of God’s messengers. These include the Quran (given to Muhammad), the Torah (given to Moses), the Gospel (given to Jesus), the Psalms (given to David), and the Scrolls (given to Abraham). Muslims believe that these earlier scriptures in their original form were divinely revealed, but that only the Quran remains as it was first revealed to the prophet Muhammad.
3. Muslims believe that God’s guidance has been revealed to humankind through specially appointed messengers, or prophets, throughout history, beginning with the first man, Adam, who is considered the first prophet. Twenty-five of these prophets are mentioned by name in the Quran, including Noah, Abraham, Moses, and Jesus. Muslims believe that Muhammad is the last in this line of prophets, sent for all humankind with the message of Islam.
4. Muslims believe that on the Day of Judgment, humans will be judged for their actions in this life; those who followed God’s guidance will be rewarded with paradise; those who rejected God’s guidance will be punished with hell.
5. This article of faith addresses the question of God’s will. It can be expressed as the belief that everything is governed by divine decree, namely that whatever happens in one’s life is preordained, and that believers should respond to the good or bad that befalls them with thankfulness or patience. This concept does not negate the concept of “free will;” since humans do not have prior knowledge of God’s decree, they do have freedom of choice.