Every tradition that calls itself monotheist must say what it means by one. For Muslims the answer is the doctrine of God’s oneness, the first thing a child learns and the last thing a believer says. The Prophet ﷺ taught it before he taught any law.Classical scholars often divide tawḥīd into lordship, worship, and names and attributes. The division is a teaching aid, not a scriptural formula.
This essay reads one short verse beside one famous Christian text, and asks what each is trying to protect.1
The Qur’an’s statement
The shortest complete statement of the doctrine is the opening of Sūrat al-Ikhlāṣ:
قُلْ هُوَ ٱللَّهُ أَحَدٌ ١
قل هو الله احدSay, “He is Allah, [who is] One.”
The word for one here is aḥad (أحد), not the ordinary numeral wāḥid. Commentators note that aḥad excludes not only a second god but any division within God (Nasr, 2015).
Intention and worship
Belief in one God is meant to shape every act. The first report in al-Bukhārī’s collection makes the point about intention:
Narrated by ʿUmar ibn al-Khaṭṭāb
إِنَّمَا الأَعْمَالُ بِالنِّيَّاتِ
انما الاعمال بالنياتActions are only by intentions.
Ḥadīth scholarship weighs the chain of narrators, the isnād, before it weighs the words (Brown, 2009).
The prologue of John
Christian theology reaches its doctrine of God through a different door. The Gospel of John opens:
Ἐν ἀρχῇ ἦν ὁ λόγος
In the beginning was the Word, and the Word was with God, and the Word was God.
Both texts affirm one God. They differ on whether distinction can exist within that one.2
Side by side
| Topic | Islam | Christianity |
|---|---|---|
| God | Absolutely one, without partner or division | One God in three persons |
| Revelation | The Qur’an, God’s speech | The Word made flesh, and scripture |
| Mediator | None; prophets deliver, they do not mediate | Christ, fully God and fully man |
The question, then, is the one the Qur’an itself puts to the People of the Book: what does it mean to worship God alone?