“The Shema says, "Hear, O Israel, the LORD our God, the LORD is one." Your Trinity is three gods, and worshipping a man is idolatry.”
Christians say the Shema too—Jesus called it the first commandment. The Trinity is not three gods but one God in three Persons, and the Tanakh itself hints at plurality within the one God and at a divine Messiah. We worship the God of Abraham, who came near in the Messiah.
📖 The full defense
Christians Confess the Shema:
When asked for the greatest commandment, Jesus answered with the Shema (Mark 12:29). Christianity is monotheistic: there is one God, and no other. The Trinity is not three gods but one God eternally existing as Father, Son and Holy Spirit. Christians reject tritheism as firmly as Judaism does.
"Echad" Allows a Unity:
The Shema uses echad, the ordinary Hebrew word for "one". It can describe a unity made of more than one part: a man and his wife "become one flesh" (Genesis 2:24). This doesn't prove the Trinity—be careful not to overclaim—but it means the Shema doesn't rule it out. The Shema forbids other gods, not a richness within the one God.
Hints of Plurality in the Tanakh:
- The Angel of the LORD speaks as God and is called God (Genesis 16:13; Exodus 3:2-6).
- "The LORD rained brimstone and fire on Sodom and Gomorrah, from the LORD out of the heavens" (Genesis 19:24).
- The elders "saw the God of Israel" (Exodus 24:10), though no one can see God and live (Exodus 33:20).
- A Child is born whose name will be called "Mighty God" (Isaiah 9:6)—the same title used of the LORD in Isaiah 10:21.
- One like the Son of Man receives a kingdom that all peoples will serve (Daniel 7:13-14).
None of these alone is a proof; together they show the Hebrew Scriptures already speak of God in ways that one simple formula can't contain.
Is It Idolatry?:
Idolatry is worshipping something created in place of the Creator. Christians do not believe a man became God; they believe the eternal God took on human nature. Jewish authorities themselves have disagreed about Christian worship: Maimonides counted it as idolatry, while some later medieval authorities (the Tosafists, and more fully Rabbi Menachem Meiri) judged Gentile Christians more leniently. That debate is worth knowing—it shows the question is not as simple as it sounds.
Bring It Back to the Person:
The real question is who Yeshua is. Isaiah 53 and Daniel 9:26 show a Messiah who suffers and is cut off; Isaiah 9 and Daniel 7 show a Messiah who is more than a man. Invite your friend to read the Tanakh passages first, then one Gospel.
✝️ Scripture anchors (NKJV)
Deuteronomy 6:4“Hear, O Israel: The LORD our God, the LORD is one!”
Mark 12:29“Jesus answered him, "The first of all the commandments is: 'Hear, O Israel, the LORD our God, the LORD is one.'"”
Isaiah 9:6“For unto us a Child is born, unto us a Son is given; and the government will be upon His shoulder. And His name will be called Wonderful, Counselor, Mighty God, Everlasting Father, Prince of Peace.”
Daniel 7:13-14“I was watching in the night visions, and behold, One like the Son of Man, coming with the clouds of heaven! He came to the Ancient of Days, and they brought Him near before Him. Then to Him was given dominion and glory and a kingdom, that all peoples, nations, and languages should serve Him.”
🔁 If they push back…
The comeback you are most likely to hear next — and a reply that keeps the conversation moving toward Jesus.