The 15 quiz questions
Question 1 : Which biblical figure is considered the common patriarch of the three monotheistic religions?
Possible answers:
- Abraham
- Adam
- Noah
- Moses
Explanation: Abraham (Ibrahim in Arabic) is the founding patriarch recognized by all three religions. Judaism descends from his son Isaac, Islam from his son Ishmael, and Christianity reveres him as a spiritual ancestor.
Question 2 : Which city is considered sacred by all three monotheistic religions?
Possible answers:
- Bethlehem
- Jerusalem
- Mecca
- Rome
Explanation: Jerusalem is holy to all three religions: it houses the Western Wall (Judaism), the Church of the Holy Sepulchre (Christianity) and the Dome of the Rock / Al-Aqsa Mosque (Islam).
Question 3 : What status does Jesus (Issa) have in Islam?
Possible answers:
- A prophet and the Messiah
- The Son of God
- A simple wise man
- An angel
Explanation: In Islam, Jesus (Issa) is recognized as a major prophet and the Messiah, but not as the Son of God. He is mentioned 25 times in the Quran. Islam denies his crucifixion and states he was raised to heaven.
Question 4 : In what chronological order did the three monotheistic religions appear?
Possible answers:
- Islam, Judaism, Christianity
- Judaism, Islam, Christianity
- Judaism, Christianity, Islam
- Christianity, Judaism, Islam
Explanation: Judaism appeared around 2000 BCE with Abraham, Christianity in the 1st century with Jesus, and Islam in the 7th century with Muhammad. Each recognizes the prophets of the preceding religions.
Question 5 : Which sacred text is shared (in different forms) by the three monotheistic religions?
Possible answers:
- The New Testament
- The Old Testament / Torah
- The Quran
- The Vedas
Explanation: The Christian Old Testament incorporates the Hebrew Bible (Tanakh) from Judaism. Islam recognizes the Torah (Tawrat) and Psalms (Zabur) as divine revelations preceding the Quran.
Question 6 : Which weekly day of worship distinguishes the three monotheistic religions?
Possible answers:
- Monday, Wednesday, Friday
- All on Sunday
- Friday, Saturday, Sunday
- All on Saturday
Explanation: Judaism observes Shabbat on Saturday, Christianity on Sunday, and Islam on Friday (day of congregational prayer, Jumu'ah). These days reflect the history and identity of each religion.
Question 7 : Which animal is forbidden to eat in both Judaism and Islam?
Possible answers:
- Chicken
- Lamb
- Beef
- Pork
Explanation: Pork is forbidden (haram/tref) in both Judaism and Islam. Judaism forbids it because it does not chew cud (Leviticus 11), and Islam considers it unclean (Quran, Surah 2:173). Christianity does not forbid it.
Question 8 : Which Christian concept is not accepted by Judaism and Islam?
Possible answers:
- Prophets
- Paradise
- Prayer
- The Trinity
Explanation: The Trinity (Father, Son, Holy Spirit) is specific to Christianity. Judaism and Islam practice strict monotheism: God is one and indivisible. Islam considers the Trinity as polytheism (shirk).
Question 9 : What is the place of worship called in Judaism?
Possible answers:
- Synagogue
- Mosque
- Temple
- Church
Explanation: The synagogue is the place of prayer and study in Judaism. The church is the Christian place of worship, and the mosque that of Islam. The word "synagogue" comes from the Greek "sunagōgē" (assembly).
Question 10 : The story of the Flood and the ark appears in the texts of all three religions. Which prophet is associated with it?
Possible answers:
- Job
- Elijah
- Noah
- Jonah
Explanation: Noah (Nuh in Arabic) is the prophet of the Flood in all three religions. He builds an ark on God's command to save his family and the animals. The story appears in Genesis, the Quran and Jewish tradition.
Question 11 : Which angel is mentioned in all three monotheistic religions as a divine messenger?
Possible answers:
- Uriel
- Gabriel
- Raphael
- Michael
Explanation: Gabriel appears in all three religions: he announces the birth of Jesus to Mary (Christianity), transmits the Quran to Muhammad (Islam) and appears to the prophet Daniel (Judaism). His name means "strength of God."
Question 12 : Which of the three monotheistic religions is the most recent?
Possible answers:
- Islam
- They appeared at the same time
- Christianity
- Judaism
Explanation: Islam is the most recent of the three, founded in the 7th century (610-632 CE) with the revelations received by Muhammad. Judaism dates back to ~2000 BCE and Christianity to the 1st century.
Question 13 : What word do Muslims use to refer to God?
Possible answers:
- Elohim
- Allah
- Yahweh
- Adonai
Explanation: Allah (الله) is the Arabic word for "God." It is used by all Arabic speakers, including Arab Christians. Yahweh (YHWH) is the Hebrew name for God in Judaism. All three religions worship the same one God.
Question 14 : Which ritual practice is common to Judaism and Islam but not mandatory in Christianity?
Possible answers:
- Baptism
- Almsgiving
- Confession
- Circumcision
Explanation: Circumcision is practiced in Judaism (on the 8th day, Brit Milah) and in Islam (Sunnah). Early Christianity abandoned this requirement at the Council of Jerusalem (~50 CE).
Question 15 : Approximately what percentage of the world population do the three monotheistic religions represent together?
Possible answers:
- 25%
- 40%
- 55%
- 75%
Explanation: The three monotheistic religions represent about 55% of the world population: ~31% Christians (2.4B), ~24% Muslims (1.9B) and ~0.2% Jews (15M). That is over 4.3 billion people.




