Question:

Some Christians like to say that Allah is a pre islamic moon god. Can you please help me understand this and how can we help christians understand we dont worship a moon god?

Answer:

All praise are due to Allah.

The Arabic word Allah and the Hebrew word Eloh are linguistic congnates, which connote a single meaning, that is the One true God of the heavens and the earth.  There is no other god save He.  Whatever language one is speaking in, and whichever name one uses, there is only one true God.

Whoever states that Allah is a god other than the one true God of the heavens and the earth, then they should be asked why the Jews in Madina, at the time of the Prophet Muhammad peace be upon him, worshipped Allah.  The cheif Rabbi in Madina was named Abd-Allah, which translates as “servant of Allah.”  (He later accepted Islam).  Christians, Jews, and Muslims, when speaking in Arabic, use the word Allah to refer to God. 

Islam was the religion of all the Prophets, from Adam, Noah, Abraham, Moses, Jesus, and Muhammad, peace be upon them all.  May Allah guide all of the sincere people out there to see the truth and light of Islam.