The Muslim answer holds up. Do not lead with this one.
Some Christian material says Allah is the name of a false god. On that view Muslims worship someone else by the very word they use, and Christians must never say it.
Allah is simply Arabic for God. It comes from al-ilah, the God.
It is the cousin of Hebrew Eloah and Aramaic Alaha. That is likely close to the word Jesus and his friends used for God.
They used it before Muhammad was born. The trilingual Zabad inscription of 512 AD, on a church of Saint Sergius, opens its Arabic line by calling on al-ilah.
Pre-Islamic Christian Arab tribes prayed to Allah. Every Arabic Bible renders God as Allah.
Millions of Arab Christians confess Allah as Father, Son and Holy Spirit every Sunday.
They agree with the facts and press them further. Quran 29:46 tells Muslims to say "our God and your God is one." So if Christians grant the shared name, they should grant a shared God, differing only in what Islam calls our later corruptions.
Islam then presents itself as Abrahamic faith purified, not a rival god's cult.
Lead with it and you lose any Arabic speaker in the first minute. The real question is not what God is called.
It is whether the Quran describes him truly — a God who is not Father, has no Son, and saves without atonement. Drop the word argument.
Keep that one.
"Arab Christians have always called God Allah. The question is not the word.
It is who he is."



Arab Christians used the word Allah before Islam, and Arabic Bibles use it now.
Muslim apologists happily agree with the facts about the language. Then they press them further. Allah is the God of Abraham by name and by heritage. Quran 29:46 tells Muslims to say to the People of the Book: our God and your God is one.
So Christians who grant the shared name should grant a shared God. The two differ, they say, only in later corruptions such as the Trinity. On that footing Islam presents itself as Abrahamic faith made pure. It is not the cult of a rival deity. Dawah regularly cites Arab Christian use of Allah as proof that Islam worships the same God Christians do, only more consistently.
Do not use this one: drop the word argument, keep the question of who God is.
This is graded answered. The factual core of the polemic is simply wrong, and both Muslim and Arab Christian sources settle it. Allah predates Islam as the Arabic word for God. It appears in Christian inscriptions and in every Arabic Bible. Christians who lead with this lose credibility with any Arabic speaker in the first minute.
The entry's value is triage. Drop the argument about the word. Keep the argument about the concept. The real question is whether the Quran's Allah truly describes the God of Abraham — a solitary God who is not Father, has no Son, and saves without atonement. This app's doctrine-of-god and tahrif entries press that question on ground that actually holds.