☪️ Muslim
They say

“The Trinity means three gods (God, Mary, and Jesus - Surah 5:116). Christians are polytheists.”

The 30-second answer

The Trinity is ONE God in three co-equal, co-eternal Persons—Father, Son, and Holy Spirit. Christians reject polytheism, and no Christian creed has ever placed Mary in the Godhead.

💡 Ask them back“Did you know the Bible firmly rejects polytheism? Deuteronomy 6:4 says: 'The LORD our God, the LORD is ONE!' We believe in ONE God in three Persons: Father, Son, and Holy Spirit. The Quran rejects saying 'Allah is the third of three' (5:73) and pictures Jesus being asked whether he told people to take him and his mother as gods (5:116). Is that the Trinity I believe in—or a triad of God, Jesus, and Mary that Christians reject too?”
⚠️ What not to sayDon't use heretical modalism analogies (like water/ice/steam or 3-leaf clover) as if the Father turns into the Son.

📖 The full defense

The Shema & Monotheism:
Christianity is strictly monotheistic. There is ONE divine Being (What God is) subsisting in three Persons (Who God is).

  • Being is the quality of existence (God is One divine essence).
  • Person is the center of consciousness and relationship (Father, Son, Holy Spirit).

God is Love Requires Multi-Personhood:
The Bible says: "God is love" (1 John 4:8). In Christian theology, God has been loving from all eternity—the Father loving the Son in the fellowship of the Spirit before the universe existed. If God is a solitary single person, whom did He love before creating anything? He would seem to need creation in order to love, making Him dependent on creation.

The "Three" the Quran Rejects:
The Quran says, "Do not say 'Three'; desist—it is better for you" (Surah 4:171), and "They have certainly disbelieved who say, 'Allah is the third of three'" (Surah 5:73). Surah 5:116 pictures Jesus being asked whether he told people, "Take me and my mother as gods besides Allah." Christians reject every one of these ideas too: God is not "one of three" gods, and Mary is a blessed woman, not a divine person. Some historians suggest the Quran was responding to heretical groups or popular devotion to Mary in Arabia (the 4th-century writer Epiphanius describes a sect called the Collyridians who offered cakes to Mary). Either way, the "three" the Quran rejects is not the biblical Trinity of Father, Son, and Holy Spirit.

✝️ Scripture anchors (NKJV)

Deuteronomy 6:4
“Hear, O Israel: The LORD our God, the LORD is one!”
Matthew 28:19
“Go therefore and make disciples of all the nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.”
2 Corinthians 13:14
“The grace of the Lord Jesus Christ, and the love of God, and the communion of the Holy Spirit be with you all. Amen.”

🔁 If they push back…

The comeback you are most likely to hear next — and a reply that keeps the conversation moving toward Jesus.

They say“Surah 5:116 doesn't say Mary is in the Trinity. It condemns taking Jesus and his mother as gods—and Christians do pray to Mary and call her "Mother of God."”
You can sayFair point—some Christians do venerate Mary, and I won't defend praying to her. But no Christian creed has ever called Mary God or part of the Godhead. "Mother of God" was a statement about Jesus—that the child she bore is truly God—not a claim that Mary is divine. The Trinity is Father, Son, and Holy Spirit, and the "gods besides Allah" the Quran rejects are ones I reject too.
They say“One plus one plus one equals three. If the Father is God, the Son is God, and the Spirit is God, that's three gods. It's illogical.”
You can sayIt would be a contradiction to say God is one Being and three Beings, or one Person and three Persons. The Trinity says one Being and three Persons—one "what" and three "whos." Even Islamic theology distinguishes Allah from His eternal attributes, such as His uncreated speech, without saying there are two gods. God's inner life is beyond us, but it isn't a math error.
🕊️ Pentecostal key — the Spirit on the streetTestify to the tangible presence of the Holy Spirit! In Pentecostal prayer, we experience the Father's love through the Son by the power of the indwelling Spirit.