The Claim
Some people — particularly in Christian contexts — assert that Muslims worship a different, separate god from the God of the Bible: that "Allah" is a pagan moon-god, an Arab deity, or a being fundamentally unlike the God described in the Old and New Testaments. This claim is common in certain polemical contexts and is heard regularly by Muslims in non-Muslim countries.
It deserves a clear, respectful, and honest response.
The Short Answer
"ALLAH" is simply the Arabic word for God — the one Creator, the Lord of the universe. It is not a separate name for a different being. Arab Christians use the word ALLAH when they speak of God in Arabic. Arab Jews used similar forms historically. Muslims believe they worship the same God who revealed Himself to Ibrahim (Abraham), Musa (Moses), and Isa (Jesus) (Peace Be Upon Them All) — the Creator of heaven and earth, the one who spoke through the prophets.
The key theological difference between Islam and Christianity is not who God is — it is the question of His nature, specifically the Christian doctrine of the Trinity versus the Islamic doctrine of strict, absolute monotheism.
What the Word "ALLAH" Actually Means
The word ALLAH (الله) is Arabic for "God." It comes from the same root as the Hebrew El and Elohim — words used throughout the Old Testament for the one God of Abraham. The linguistic relationship between Arabic ALLAH and Hebrew El/Elohim and Aramaic Alaha (used in the Aramaic dialects close to what Isa (Jesus) (Peace Be Upon Him) spoke) reflects a common Semitic root.
Critically: Arab Christians — who have been Christian since before Islam existed — use the word ALLAH for God in their Arabic-language Bibles, prayers, and liturgy. They do not understand themselves to be worshipping a different god. The word ALLAH is the Arabic word for God, period. The notion that it refers to a pagan moon-god is not supported by Arabic linguistics or scholarship.
The God of Islam: What the Quran Teaches
Lord of All the Worlds
The Quran opens with:
ٱلْحَمْدُ لِلَّهِ رَبِّ ٱلْعَٰلَمِينَ
“All praise is due to ALLAH, Lord of the worlds.”
ALLAH is not described as the God of Arabs or the God of Muslims. He is described as the Lord of all worlds — all of creation, all peoples, all times. This is the same universal claim made by the God of the Bible.
The God of the Prophets
The Quran identifies ALLAH as the same God who sent the earlier prophets:
قُلْ ءَامَنَّا بِٱللَّهِ وَمَآ أُنزِلَ عَلَيْنَا وَمَآ أُنزِلَ عَلَىٰٓ إِبْرَٰهِيمَ وَإِسْمَٰعِيلَ وَإِسْحَٰقَ وَيَعْقُوبَ وَٱلْأَسْبَاطِ وَمَآ أُوتِىَ مُوسَىٰ وَعِيسَىٰ وَٱلنَّبِيُّونَ مِن رَّبِّهِمْ
“Say: We have believed in ALLAH and what has been revealed to us and what was revealed to Ibrahim (Abraham), Ismail (Ishmael), Ishaq (Isaac), Yaqub (Jacob), and the tribes, and what was given to Musa (Moses) and Isa (Jesus) and the prophets — from their Lord.”
The Quran explicitly names the God of the Hebrew prophets as the same as ALLAH. Muslims do not believe Islam invented a new god — they believe Islam is the restoration of the original monotheism of Ibrahim (Abraham) (Peace Be Upon Him), the first to submit fully to ALLAH.
The Names and Attributes of ALLAH
The Quran describes ALLAH through names and attributes that closely parallel descriptions of God in the Bible:
- Al-Rahman — The Most Merciful
- Al-Rahim — The Most Compassionate
- Al-Khaliq — The Creator
- Al-Razzaq — The Provider
- Al-'Alim — The All-Knowing
- Al-Qadir — The All-Powerful
- Al-Hayy — The Ever-Living
- Al-Wahhab — The Bestower
The Quran contains the famous verse of the divine attributes (Ayatul Kursi):
ٱللَّهُ لَآ إِلَٰهَ إِلَّا هُوَ ٱلْحَىُّ ٱلْقَيُّومُ ۚ لَا تَأْخُذُهُۥ سِنَةٌ وَلَا نَوْمٌ ۚ لَّهُۥ مَا فِى ٱلسَّمَٰوَٰتِ وَمَا فِى ٱلْأَرْضِ
“ALLAH — there is no deity except Him, the Ever-Living, the Sustainer of existence. Neither drowsiness overtakes Him nor sleep. To Him belongs whatever is in the heavens and whatever is on the earth.”
Where Muslims and Christians Agree
Muslims and Christians share a remarkable set of core beliefs about God:
- One Creator of all existence
- All-knowing and all-powerful
- Merciful and just
- Sent messengers and revelation to humanity
- Will hold people accountable on a Day of Judgment
- Sent the prophets: Ibrahim (Abraham), Musa (Moses), Isa (Jesus) (Peace Be Upon Them All) and many others
The Quran describes Ibrahim (Abraham) (Peace Be Upon Him) as the founding model of pure monotheism — hanif, one who turned away from all false worship and toward ALLAH alone. Muslims, Jews, and Christians all trace their spiritual ancestry to this figure. That shared lineage points to a shared God — the Creator who spoke to and through the prophets.
Where Islam Differs from Christianity
The most significant theological difference is not who God is, but the question of His nature:
The Trinity: Christianity, in its mainstream formulation, teaches that God is one being in three persons — Father, Son, and Holy Spirit. The Quran directly addresses this doctrine:
يَٰٓأَهْلَ ٱلْكِتَٰبِ لَا تَغْلُوا۟ فِى دِينِكُمْ وَلَا تَقُولُوا۟ عَلَى ٱللَّهِ إِلَّا ٱلْحَقَّ ۚ إِنَّمَا ٱلْمَسِيحُ عِيسَى ٱبْنُ مَرْيَمَ رَسُولُ ٱللَّهِ وَكَلِمَتُهُۥٓ أَلْقَىٰهَآ إِلَىٰ مَرْيَمَ وَرُوحٌ مِّنْهُ ۖ فَـَٔامِنُوا۟ بِٱللَّهِ وَرُسُلِهِۦ ۖ وَلَا تَقُولُوا۟ ثَلَٰثَةٌ ۚ ٱنتَهُوا۟ خَيْرًا لَّكُمْ
“O People of the Book, do not commit excess in your religion or say about ALLAH except the truth. The Messiah, Isa (Jesus), the son of Maryam (Mary), was but a messenger of ALLAH and His word which He directed to Maryam and a spirit from Him. So believe in ALLAH and His messengers and do not say 'three' — desist, it is better for you.”
Islam teaches strict, absolute Tawheed — the oneness of ALLAH. ALLAH has no partners, no son in a divine sense, and no human form. This is a genuine theological difference from mainstream Christianity.
But a theological disagreement about the nature of God is not the same as worshipping a different god. Muslims and Christians disagree about what God is like — not about who created the universe.
Same God, different understanding?
This is a genuine theological question — and one that Muslim and Christian scholars have debated respectfully for centuries. The Islamic position is that ALLAH is the same Creator worshipped by the prophets, including Isa (Jesus) (Peace Be Upon Him), and that later theological developments — such as the Trinity — represent departures from original monotheism. Christians, of course, disagree. What both traditions share is belief in the one Creator of all existence. What they disagree on is the nature of that Creator.
Addressing the Real Concern
The "moon-god" claim — that ALLAH was originally a pagan Arab moon-god and Islam adopted this deity — is not supported by the academic study of Arabian religious history or Arabic linguistics. It is a polemical claim, not a scholarly one. The moon symbol associated with Islam in some cultural contexts is a historical artifact of the Ottoman Empire and is not a theological statement.
The concern behind the question is often genuine: people want to know whether the God of the Quran is morally good, whether He is loving, whether He is just — or whether He is fundamentally different from what the questioner believes God to be. Those are good questions that deserve substantive engagement, and the Quran offers extensive answers.
Common Questions
Arab Christians use the word ALLAH for God in their Arabic prayers and Bibles — they have done so since before Islam existed. They believe they worship the God of the Bible. Muslims believe they worship the same Creator who sent the prophets. Whether the theological differences between Christianity and Islam mean they are worshipping "the same God" is a question theologians debate — but it is certain that ALLAH is not a different being invented by Islam. It is the Arabic word for the one God.
No. Islam honors Isa (Jesus) (Peace Be Upon Him) as one of the greatest prophets — born miraculously to Maryam (Mary), given miracles, and elevated by ALLAH. But Islam does not believe he is God or the son of God in a divine sense. The Quran affirms his prophethood while rejecting his divinity. This is a core theological difference between Islam and Christianity — not a difference about which God exists, but about what that God is like and what relationship the prophets had to Him.
Islam denies the Trinity — that is correct. But denying a specific theological doctrine about God's nature is not the same as worshipping a different God. Muslims believe the Christian doctrine of the Trinity represents a departure from the original monotheism taught by Isa (Jesus) (Peace Be Upon Him) himself. Christians naturally disagree. But both traditions claim to worship the one Creator of the universe who sent the prophets. The disagreement is about God's nature — not about which being is being referred to.
Key Takeaways
- ALLAH is the Arabic word for God — not a name for a different or lesser being.
- Arab Christians use the word ALLAH for God in their Arabic Bibles and prayers.
- The Quran identifies ALLAH as the same God who spoke to Ibrahim (Abraham), Musa (Moses), and Isa (Jesus) (Peace Be Upon Them All).
- Muslims and Christians share core beliefs: one Creator, all-powerful, all-knowing, merciful, who sent prophets and revelation.
- The genuine theological difference between Islam and Christianity is the question of the Trinity versus strict monotheism — a disagreement about God's nature, not about which God is being worshipped.
- The claim that ALLAH was originally a pagan moon-god is a polemical claim not supported by academic scholarship.
Related Topics
- What Is Tawheed? — The Islamic concept of the absolute oneness of ALLAH
- The 99 Names of ALLAH — ALLAH's names and attributes as revealed in the Quran
- Do Muslims Worship Muhammad ﷺ? — The Islamic position on the Prophet's status
- Islam and Christianity Compared — A respectful comparative overview
References
Quran
- Quran 1:2 — ALLAH as Lord of all the worlds
- Quran 3:84 — Belief in the God who sent Ibrahim (Abraham), Musa (Moses), and Isa (Jesus) (Peace Be Upon Them All)
- Quran 2:255 — Ayatul Kursi — description of ALLAH's attributes
- Quran 4:171 — Addressing the People of the Book; the position on the Trinity
All Quran translations in this article require verification against a standard scholarly translation before final publication.