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September 11, 2026Short & citedBlog
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People File • Biblical Figure

Thaddeus

Thaddeus is a traditional name used for one of the Twelve Apostles of Jesus in the New Testament, commonly identified with Judas son of James and sometimes called Jude or Thaddaeus.

Updated September 11, 20261 min readCited sources

Thaddeus is one of the Twelve Apostles of Jesus in the New Testament, commonly identified with Judas son of James and also called Jude or Thaddaeus. The Bible gives little biographical detail, but later tradition expanded his story.

Identity and names

Thaddeus appears in Gospel apostolic lists under different names: Matthew and Mark call him Thaddeus or Thaddaeus, while Luke and Acts refer to Judas son of James. This variation has led to later discussion about whether these all refer to the same apostle, but most Christian tradition treats them as one.

Biblical references

The New Testament mentions Thaddeus only in the apostolic lists: Matthew 10:3, Mark 3:18, Luke 6:16, and Acts 1:13. These passages place him among the Twelve but provide no narrative about his life, ministry, or death. The Bible is silent on what he did after Jesus’ resurrection.

Later Christian tradition

Outside Scripture, tradition credits Thaddeus with missionary work after Pentecost, often placing him in Edessa or nearby regions. Accounts of his death vary: some say he was martyred by club, axe, or crucifixion. These later stories fill gaps left by the biblical record, but none are confirmed by early texts.

In short

  • Thaddeus is one of the Twelve Apostles, also called Thaddaeus or Jude.
  • He is commonly identified with Judas son of James in Luke and Acts.
  • The Bible gives almost no biographical detail about him.
  • Later tradition links him to missionary activity and martyrdom.
Canadian angle

Thaddeus is mainly relevant to Canadian readers through Christianity, biblical study, liturgy, and the broader influence of New Testament figures in Canadian religious history and education.

Quick questions

Who was Thaddeus in the Bible?
Thaddeus was one of the Twelve Apostles of Jesus. He is mentioned in Gospel apostolic lists, but the Bible gives very few details about his life.
Is Thaddeus the same as Judas son of James?
He is commonly identified with Judas son of James in Luke and Acts. This identification is widely used in Christian tradition, though the biblical lists use different names.
Does the Bible say what Thaddeus did after Jesus’ ministry?
No detailed account appears in Scripture. Later Christian tradition says he preached after Pentecost and founded or served churches in the East.

Sources

  1. BiblicalTraining.org — https://www.biblicaltraining.org/library/thaddaeus
    Supports: Thaddaeus as one of the Twelve Apostles and the biblical name identifications in apostolic lists.
  2. GotQuestions.org — https://www.gotquestions.org/Thaddeus-in-the-Bible.html
    Supports: Thaddeus as one of the original twelve disciples and the limited biblical information about him.
  3. Jesus.net — https://jesus.net/articles/thaddeus
    Supports: Thaddeus as also known as Judas son of James and traditional meaning/interpretation of the name.
  4. Christianity.com — https://www.christianity.com/wiki/people/who-was-thaddeus-in-the-bible.html
    Supports: Alternative names for Thaddeus and the Gospel/Acts references.