Showing you
genealogically,
textually,
linguistically, and
historically that Jesus’s
adelphoi are not His biological siblings is not “making assumptions.” It is reading the sources in context — something your interpretation does not do.
You quoted Andrew Koperski saying:
“Hegesippus… claiming that Jude was known at the time as the Lord’s blood sibling.”
But that is not what Hegesippus actually says, and it ignores the context of his own statements.
Here’s the problem with that interpretation:
1. Hegesippus explicitly says Clopas was Joseph’s brother.
"For Hegesippus records that Clopas was a brother of Joseph." (via
Hist. Eccl. II.11.2).
"Symeon (Simon), son of Clopas, an uncle of the Lord..." (via
Hist. Eccl. III.32.6).
If Clopas is Jesus’s
uncle, then Clopas is Joseph’s
brother.
And if Symeon (Simon) is Clopas’s
son, then Symeon (Simon) is Jesus’s
cousin, not Mary’s child.
This matches exactly what Hegesippus says elsewhere, via
Hist. Eccl. III.11.12:
“Symeon, the son of Clopas… He was a cousin, as they say, of the Saviour.”
And Hegesippus places
James and Jude in the same kinship category:
- Symeon (Simon) succeeds James as bishop of Jerusalem because he is Jesus’s cousin
- James is called “the Lord’s brother” (cf. Hist. Eccl. II.23.4)
- Jude (Judas) is one of the same “brothers” (cf. Hist. Eccl. III.20.1)
This alone makes it impossible for Symeon (Simon), James, or Jude to be Mary’s biological sons.
2. “According to the flesh” does NOT mean “same mother.”
In early Christian usage, “according to the flesh” means
biological kinship in general, not “born of the same womb.”
Paul uses the phrase the same way:
- Romans 9:3 — “my kinsmen according to the flesh”
- 1 Corinthians 10:18 — “Israel according to the flesh”
- Galatians 4:23 — “born according to the flesh”
None of these mean “same mother.”
They mean
extended family,
same lineage,
same tribe.
So when Hegesippus calls James or Jude “the Lord’s brother
according to the flesh,” he is using the same Jewish kinship language Paul uses —
extended family, not nuclear siblings.
3. Hegesippus himself explains what he means by “brother.”
He says Symeon succeeded James because Symeon was:
“the Lord’s cousin.”
This is crucial.
Hegesippus uses “brother” and “cousin”
interchangeably, exactly like the New Testament does with
adelphos.
He is not contradicting himself. He is explaining the kinship category:
- James = “brother of the Lord”
- Jude = “brother of the Lord according to the flesh”
- Symeon = “cousin of the Lord”
- All three = sons of Clopas
- Clopas = Joseph’s brother
Therefore all three =
Jesus’s cousins by marriage, not Mary’s children.
This is the same identification preserved by:
- Papias
- Hegesippus
- Clement
- Eusebius
- Jerome
All independent, all consistent.
4. The passages I quoted actually prove the traditional genealogy.
“Symeon (Simon), son of Clopas, an uncle of the Lord…”
This means:
- Clopas = Joseph’s brother
- Clopas’s sons = Joseph’s nephews
- Joseph’s nephews = Jesus’s cousins
- These cousins = the men called Jesus’s adelphoi
- Therefore adelphos = kinsman, not “child of Mary”
You cannot take one phrase (“according to the flesh”) and ignore the genealogy Hegesippus himself provides:
- Clopas is Joseph’s brother
- Clopas’s sons are James, Jude, and Symeon
- Therefore they are not Mary’s sons
- Therefore they are not Jesus’s biological brothers
- Therefore “brother” = kinsman, exactly as in the NT
Hegesippus is not contradicting the Gospels.
He is
confirming them.
5. The earliest Christian writers all agree with Hegesippus.
Every early source identifies Jesus’s “brothers” as the sons of Clopas/Cleophas:
- Papias — Mary of Clopas/Cleophas is the mother of James, Joseph, Simon, and Jude
- Hegesippus — Clopas/Cleophas is Joseph’s brother; his sons are Jesus’s cousins
- Clement — James the Just is not James son of Zebedee
- Eusebius — James the Just and Symeon (Simon) son of Clopas are Jesus’s cousins
- Jerome — Mary of Clopas/Cleophas is Mary’s sister‑in‑law and mother of James (the Less)
There is
zero early Christian evidence that Mary had other children.
There is
unanimous early Christian evidence that Jesus’s
adelphoi were the sons of Clopas.
6. The New Testament itself confirms this kinship category.
The term
adelphos in Koine Greek has a broad semantic range:
“a brother, near kinsman, or relative.”
Paul’s reference to:
“James, the Lord’s brother” (Galatians 1:19)
shows that James was both:
- a relative of Jesus
- and one of the Twelve, since Paul explicitly includes him among the apostles he met
This immediately rules out the idea that he was a younger biological son of Mary, because the Gospels list
no such James among the Twelve.
And among the Twelve,
only James of Alphaeus had a brother named
Judas (Thaddeus).
Therefore the contextual evidence strongly suggests that Paul’s James — the James mentioned in Matthew 13:55, Mark 6:3, and Galatians 1:19 — is
James of Alphaeus, one of the Twelve.
7. The Gospels identify the actual parents of these men.
Across all four Gospels, only one Mary is ever called the mother of James the Less and Joseph:
Mary the wife of Clopas/Cleophas.
She appears in:
- Mark 16:1
- Luke 24:10
- Matthew 27:56
- Mark 15:40
- John 19:25
John identifies her as Mary’s
adelphe (“sister”), a term that — like
adelphos — includes female relatives.
Two biological sisters would not both be named Mary, so the natural reading is that she is Mary’s
sister‑in‑law, married to Joseph’s brother.
Her sons Joseph and James — the same individuals listed among Jesus’s
adelphoi — were therefore Jesus’s
cousins by marriage, a relationship fully covered by the semantic range of
adelphos.
8. Why “cousins by marriage” is the correct kinship category.
Matthew 1:1-17 traces Jesus’s
legal lineage through Joseph. Luke 3:23-38 traces Jesus’s
biological lineage through Mary (under Joseph’s name, as was customary).
Because Joseph is
not Jesus’s biological father, Joseph’s nephews (the sons of Clopas/Cleophas) are
not Jesus’s blood relatives.
Their relationship to Jesus is familial, but not biological — they are His
cousins by marriage, a kinship category fully encompassed by the semantic range of
adelphos.
This is why the Gospels can call them Jesus’s “brothers” without implying they were Mary’s sons.
So no — Hegesippus does not say Jude was Mary’s son.
He says Jude (Judas) was:
- the son of Clopas
- Joseph’s nephew
- Jesus’s cousin
- and therefore called “brother” in Jewish kinship language
Exactly the same identification preserved in the Gospels.
But the Emmaus disciples are
not identified as Clopas/Cleophas and his wife.
The text says:
“One of them was named Cleopas.” (Luke 24:18)
Cleopas ≠ Clopas.
They are different names in Greek:
- Κλεόπας (Cleopas) — Emmaus disciple
- Κλωπᾶς (Clopas) — Joseph’s brother, father of James, Jude, and Symeon
Even Protestant scholars acknowledge they are
not the same person.