Home > Religions and beliefs > > Why does Islam reject the Trinity?
What the doctrine of the Trinity exactly affirms, what the tawhid teaches, the explicit Quranic command, and the Islamic answer to the biblical arguments for "Jesus is God".
Islam rejects the Trinity because it teaches an absolutely one God, without person or associate (Quran 112), and the doctrine of one God in three persons (formulated at the councils of Nicaea in 325 and Constantinople in 381, CCC par. 253) contradicts that oneness. The Quran commands the People of the Book: "O People of the Book, do not go to extremes in your religion, and do not say about Allah but the truth. The Messiah, Jesus, son of Mary, was only a messenger of Allah, and His Word that He bestowed upon Mary, and a spirit from Him. So believe in Allah and His messengers and do not say “Three” [i.e., Trinity]. Cease; that is better for you. Indeed, Allah is the only One God. Glory be to Him, [far exalted is He] to have a son. To Him belongs all that is in the heavens and all that is on earth, and sufficient is Allah as a Disposer of Affairs." (Quran 4:171).
This rejection targets the doctrine, never the persons.
Contents:
Updated on 17 October 2026 at 9:55 PM
📖 5 min readThe Trinity is the Christian doctrine of God: one God in three distinct persons, the Father, the Son and the Holy Spirit, one divine nature.
The Nicene-Constantinopolitan Creed (the common form of the great Churches) says: "We believe in one God... and in one Lord, Jesus Christ, the only Son of God, born of the Father before all ages, God from God". The Catechism of the Catholic Church writes: "The Trinity is One. We do not confess three gods, but one God in three persons" (CCC, par. 253), and acknowledges that this mystery exceeds human reason.
Formulated essentially at the councils of Nicaea (325) and Constantinople (381), it became the criterion of Christian orthodoxy.
History itself nourishes the Islamic reading, and the preacher and researcher Umar al-Ashqar formulates it thus: before the council of Nicaea (325), the Christian communities diverged deeply;
the fathers gathered in council did not share the same chapel, and the Trinitarian doctrine took its definitive form only at the end of the 4th century, that is, after Plotinus (died 270) and the diffusion of Neoplatonism whose mark it bears. In other words: Trinitarianism, as a defined system, is posterior to the Greek philosophy that nourished it (Umar al-Ashqar, Muhadarat fi-l-Nasraniya, the chapter on the Trinity and Greek philosophy).
The heart of Islam is the tawhid: Allah is absolutely one, without associate, without son, without female partner, and nothing resembles Him: "Say: “He is Allah, the One; Allah, the Eternal Refuge. He neither begets nor is He begotten, and there is none comparable to Him.”" (Quran 112).
"And your God is One God; there is no deity worthy of worship except Him" (Quran 2:163). For Islam, the worship due to the Creator cannot be shared, and any doctrine introducing plurality into His nature, however subtle, contradicts that oneness.
The Quran addresses Christians directly on this point: "O People of the Book, do not go to extremes in your religion, and do not say about Allah but the truth. The Messiah, Jesus, son of Mary, was only a messenger of Allah, and His Word that He bestowed upon Mary, and a spirit from Him. So believe in Allah and His messengers and do not say “Three” [i.e., Trinity]. Cease; that is better for you. Indeed, Allah is the only One God. Glory be to Him, [far exalted is He] to have a son. To Him belongs all that is in the heavens and all that is on earth, and sufficient is Allah as a Disposer of Affairs." (Quran 4:171). The verse honours Jesus (peace be upon him) (messenger, word of Allah, spirit from Him) while denying the Trinity.
Christians ground the divinity of Jesus on New Testament verses. The Islamic reading, which respects these texts but reads them through the tawhid, answers point by point:
Conversely, the verses distinguishing Jesus from God are numerous and clear: "the Father is greater than I" (John 14:28), "about that day or hour no one knows, neither the angels in heaven, nor the Son, but only the Father" (Mark 13:32), "that they know you, the only true God, and Jesus Christ whom you have sent" (John 17:3), and the prayer of Gethsemane: "not my will, but yours" (Matthew 26:39).
A God who prays, ignores something and submits is, for Islam, the description of an eminent servant, not of the Creator.
Rejecting the Trinity, for a Muslim, is defending the purity of monotheism: it is precisely what Jesus himself teaches according to the Quran, which has him say: "Indeed, Allah is my Lord and your Lord, so worship Him. This is the straight path.”" (Quran 3:51). This implies no contempt: the Quran honours Christians (Quran 5:82), forbids coercion in religion (Quran 2:256), and proposes a common word: "Say, “O people of the Book, come to a common term between us and you, that we worship none but Allah and associate no partners with Him, and that we do not take one another as lords besides Allah.” But if they turn away, say, “Bear witness that we are Muslims [submitting to Allah].”" (Quran 3:64).
No. The Quran reports the doctrine as it is defined: one God in three persons. It is precisely this formulation that Islamic oneness cannot accept, even if the Christian intention is to proclaim one God.
No. The word appears nowhere in the Bible: the doctrine was formulated at the 4th-century councils to articulate divergent verses. Other verses, like John 17:3 or Mark 13:32, maintain a clear distinction between Jesus and God.
No. The Quran honours Christians (Quran 5:82) and invites them to dialogue "in the best manner" (Quran 29:46). What is rejected is a doctrine about God's nature, not persons.