Allah () is the common name for God in the Arabic language. It is similar to Eloah, Hebrew name for God and Alaha, Aramaic name for God.

Muslims commonly use the word Allah for God. Sometimes, people who speak Arabic still use the word Allah when they speak English. In Islam, Allah is Merciful and Allah is the one who loves his followers.

In addition, it is also known with names expressing human feelings such as Sabur (very patient), celil (Celalet; 1 / majesty, 2 / rage, wrath), womb (very merciful), halim (mild-tempered), vedud (loving).

In Christianity God is like the father and in Sufism a friend.

In Tanach, Jehovah is often personified.

In Arabic

Etymology
In the Canaan pantheon dating back to 2000 BC, "El" or "Il" was in the position of chief. El had such qualities as almighty, eternal, immortal, the sole ruler of everything in the earth and heaven, the creator god, the god of the covenant etc. El was transferred to Aramaic as Eloh or Elaha, to Hebrew as Eloah, and in the New Testament, "Eli" and "Elohi" were used to mean god. El  continues to appear in names ending with el or il; Gabri-el, Mika-el, Azrael, Israel, Israel, Yishmael , Emanuel etc.

As a common noun 
In Arabic, the general word for a god is ilaah.  It can mean a specific god, or any god at all, depending on how it is used.

As a proper noun 

As a proper noun, "Allah" is a name for one God. In Arabic, the word al is an article (a word for "the"), so al-ILaah means "The God".  

Usually, the word "Allah" is used by Muslims.  However, Arab Christians also call their God "Allah." 

The name "Allah" is made of four letters in Arabic,  (or Alif Lam Lam Ha, from right to left, A-L-L-H), which when brought together make الله

We can't find a word with a letter pronounced as lla by putting two lam together in Arabic.
It may be Al Yah, which means The Yah.
Yah is the God of Banu Hashem/Son of Shem.
Alif Lam Yah ha.
If we write the above letters together it will resemble the calligraphy of the word nowadays pronounced as Allah.
اليه and الله seems to be the same.

In Islam 
In Islam, God is usually called "Allah." There are many different names for God in Islam.  However, "Allah" is the most common.  It means the same thing as any of the other names.

For Muslims, "Allah" describes a single God who is all-powerful and never makes mistakes.  Muslims believe that Allah created everything, including the heavens and the Earth, simply by saying Kun Faya Kun ("Be and it is"). Muslims often repeat the word "Allah" many times when they are praying.

In Judaism 
In Judaism, God is usually called YHWH and Eloah. Both names are mentioned in the Old Testament and are one of the seven names of God in Judaism. It can also be noted that in Judaism, Elohim is a name for God and in Islam, Allahuma is a name for God. Since Jewish and Muslim names of God are very similar, Jews and Muslims say that they believe in the same God.

In Christianity 
Arab Christians call their God "Allah" due to Arabic language. In the Bible translation into Arabic, God is referred to by this name. The word "Allah" was also used in the old Turkish translations of the Bible, e.g. 1941 version, due to Islamic hegemony on Turkish people and influence of Arabic on Turkish.

Gallery

References

Islam
Gods and goddesses