Jesus’ brothers and sisters

Should the “brothers and sisters” of Jesus be understood as cousins, as members of another set of siblings, or as true brothers and sisters in the sense in which we understand it today?

We are addressing here a question that has given rise to many divergent commentaries, often linked to the confessional presuppositions of their authors.

Absolute intellectual independence doubtless remains a limit that is difficult to reach; nevertheless, it is possible to strive toward a rigorous analysis by relying primarily on the textual data. In this perspective, we will assume that the authors of the Gospels used precise terms, which deserve careful examination in their context.

Our approach will therefore consist in identifying the most significant biblical passages, distinguishing as far as possible the textual data from their later interpretations. We will nevertheless mention the two main positions — Protestant and Catholic — in order to situate what is at stake in the debate, without engaging in a polemic that would risk obscuring the analysis of the facts.

1- The explicit mentions of the “brothers and sisters”

The Synoptic Gospels as well as the Gospel according to John mention several times the existence of “brothers” and “sisters” of Jesus. These passages are the unavoidable starting point of any analysis.

Thus, the Gospel according to Matthew reports:
Matthew 13.55-56: “Is this not the carpenter’s son? Is not Mary his mother? Are not James, Joseph, Simon and Jude his brothers? And are not his sisters all here with us?”

A parallel passage is found in Mark 6.3, which confirms these data by mentioning the same names. These texts explicitly identify four “brothers”: James, Joseph, Simon and Jude, while also referring to “sisters,” without specifying their number or identity.

The Gospel according to John provides complementary elements by mentioning the presence of Jesus’ “brothers” in his circle:
John 2.12 indicates that after the noces de Cana — afficher la définition INF122, Jesus goes down to Capernaum “with his mother, his brothers and his disciples.”
Likewise, John 7.3-5 reports an interaction in which Jesus’ “brothers” urge him to show himself publicly, while specifying that “even his brothers did not believe in him.”

These different passages, independent of one another, converge to attest the existence of a group referred to as the “brothers” and “sisters” of Jesus, integrated into his family and social environment.

2- Attitude and role of the brothers in the Gospel narrative

The Gospels are not content to mention these “brothers” by name only; they also describe their attitude toward Jesus, which is an important element for historical analysis.

At first, the “brothers” appear as outside the faith in Jesus. The explicit statement of John 7.5 — “even his brothers did not believe in him” — underlines a form of incomprehension, even distance, with regard to his mission. This datum is all the more notable in that it does not correspond to an apologetic construction aimed at glorifying Jesus’ immediate circle.

However, this situation changes after the events of the resurrection. The book of the Acts of the Apostles bears witness to their presence within the first Christian community:
Acts 1.14 explicitly mentions “Mary, the mother of Jesus, and his brothers” among those who persevere in prayer with the apostles.

This passage suggests a progressive integration of these “brothers” into the movement of the disciples, which gives their existence an additional historical dimension, beyond a mere passing mention.

3- Lexical analysis

The examination of the vocabulary used in the Greek texts of the New Testament is an essential element of the analysis.

The term used to designate the “brothers” is adelphos (ἀδελφός), whose primary meaning is that of a biological brother, born of the same parents. However, in Greek usage influenced by the Semitic languages (Hebrew and Aramaic), this term can also designate a close relative or a member of the same family or community group.

It should be noted that the Greek language has a more specific term for a cousin, anepsios (ἀνεψιός), used notably in Colossians 4.10. The fact that this term is not used in the Gospels to designate the “brothers” of Jesus is a significant element, though not decisive on its own.

Moreover, the influence of the Septuagint — the Greek translation of the Old Testament — shows that the term “brother” is frequently used in a broader sense to translate the Hebrew ’ah, which can denote various degrees of kinship. This linguistic datum calls for caution in a strictly biological interpretation of the term.

Intermediate conclusion

The textual data of the Gospels clearly attest the existence of persons referred to as the “brothers” and “sisters” of Jesus, partly named and integrated into his family circle. Their presence is confirmed by several independent Gospel sources, and their role evolves over the course of the narrative.

However, the lexical analysis reveals a certain flexibility in the use of the term “brother,” which prevents us, at this stage of the study, from determining with certainty the exact nature of the family relationship. This question therefore belongs to an interpretation that goes beyond the textual data alone and requires taking into account the historical and cultural context.

The examination of the textual data and of the historical context makes it possible to envisage several hypotheses concerning the identity of the “brothers and sisters” of Jesus. None of these hypotheses is absolutely compelling on the basis of the Gospel texts alone; each rests on a particular reading of the available data, combined with historical or theological presuppositions. They should therefore be presented critically.

1- The brothers and sisters as members of a biological set of siblings

The first hypothesis consists in understanding the “brothers and sisters” of Jesus in their most direct sense: that of true brothers and sisters, children of Mary and Joseph.

This reading rests on the common meaning of the Greek term adelphos, which primarily designates a brother born of the same parents. It also finds support in the natural way in which the Gospels present these persons, without any particular detail that would indicate a different relationship. Passages such as Matthew 13.55-56 or Mark 6.3 give the impression of an ordinary family setting, as it could have been understood by the hearers.

Moreover, certain narrative elements — such as the initial unbelief of the “brothers” (John 7.5) or their later presence in the community (Acts 1.14) — fit coherently into this reading.

However, this hypothesis assumes that nothing, in the tradition or in the intentions of the authors, stands in the way of such an understanding. It is generally favored in a historical-critical approach that gives priority to the literal meaning of the text.

2- The brothers as half-brothers (children of an earlier marriage of Joseph)

A second hypothesis, ancient and attested notably in certain Eastern Christian traditions, proposes to understand the “brothers” of Jesus as half-brothers, born of an earlier marriage of Joseph.

According to this view, Joseph would have been a widower at the time of his betrothal to Mary and would already have had children. The “brothers” of Jesus would then be older than he, which could explain certain aspects of the narrative, notably their attitude toward him.

This hypothesis has the advantage of preserving both the reality of the “brothers” mentioned in the Gospels and a particular conception of the role of Mary. It also rests on ancient traditions, although these are not part of the canonical corpus.

However, it does not rest directly on explicit statements of the Gospels. No text mentions an earlier marriage of Joseph or the existence of children born of such a union. It is therefore a reconstruction intended to harmonize the Gospel data with certain traditions.

3- The brothers as cousins or close relatives

A third hypothesis consists in identifying the “brothers and sisters” of Jesus as cousins or close relatives.

This interpretation rests mainly on the linguistic and cultural context mentioned above. The broader use of the term “brother” in the Semitic languages does indeed allow various family relationships to be designated without precise distinction. Moreover, certain connections between the names mentioned in the Gospels and other figures of the New Testament have led to the proposal of alternative identifications.

This hypothesis has the advantage of fitting within the semantic flexibility of the biblical vocabulary. It also makes it possible to explain the absence of the specific Greek term for “cousin” (anepsios), by considering that the authors retained a mode of expression influenced by Aramaic.

Nevertheless, it encounters certain limits. The Gospels never state explicitly that these “brothers” were cousins, and the use of the term adelphos in a concrete narrative context tends, in the Greek language, to evoke primarily a relationship of direct brotherhood. Consequently, this hypothesis rests largely on a contextual interpretation rather than on an explicit textual indication.

4- Critical evaluation of the hypotheses

None of the hypotheses presented can be demonstrated definitively on the basis of the Gospel data alone. The literal reading (biological brothers) has the simplicity of the immediate meaning of the text, but it does not necessarily take into account all the cultural and linguistic dimensions of the Semitic context.

The hypotheses of half-brothers or cousins seek to resolve certain tensions perceived between the texts and later traditions. They offer solutions that are coherent within their own framework, but rest on elements external or indirect with respect to the Gospels themselves.

Thus, from a strictly historical point of view, it must be acknowledged that the texts attest the existence of “brothers and sisters” of Jesus without specifying unambiguously the exact nature of this bond. Any more precise conclusion necessarily involves a measure of interpretation.

Intermediate conclusion

The analysis of the historical hypotheses shows that the question of the identity of the “brothers and sisters” of Jesus remains open. The texts provide real data, but not enough to decide categorically among the different possibilities.

This situation largely explains the diversity of positions adopted throughout history. It also leads us to distinguish clearly what belongs to historical analysis — based on the texts and their context — from what belongs to doctrinal interpretation.

It is therefore appropriate to examine, in a fourth stage, how these different readings were integrated and developed within the confessional traditions.

It appears that, once the doctrine of the perpetual virginity of Mary had been progressively affirmed, interpreters developed specific readings of the Gospel passages concerning the “brothers and sisters” of Jesus, in order to offer an understanding compatible with this conviction. These interpretations, though supported by certain real linguistic and cultural arguments, belong to a process of theological harmonization that tends to guide the reading of the text.

In this perspective, the idea that the relative ambiguity of the Gospel data would, on its own, have given rise to the diversity of interpretations within the Christian traditions needs to be qualified. While this indeterminacy did make several readings possible, it also appears that some of them developed within an already established doctrinal framework, which influenced their orientation.

Thus, these positions do not rest solely on a direct analysis of the texts, but belong to broader theological constructions. It is therefore necessary to present them by carefully distinguishing their foundations, in order to differentiate what belongs to textual exegesis from what proceeds from doctrinal elaboration.

1- The Protestant position

The Protestant tradition generally favors a literal and direct reading of the Gospels. In this perspective, the “brothers and sisters” of Jesus are understood as members of a biological set of siblings, children of Mary and Joseph.

This position rests on several elements:

the ordinary meaning of the term adelphos, understood as “brother” in the strict sense;

the absence, in the Gospel texts, of explicit indications suggesting another relationship;

the desire to stay with what the text affirms without adding interpretations derived from later traditions.

In this approach, passages such as Matthew 13.55-56 or Mark 6.3 are read in their most natural sense. The “brothers” appear there as part of an ordinary family setting.

It should be noted, however, that this reading, although it presents itself as strictly textual, also rests on a hermeneutical choice: that of privileging the literal sense of the Greek of the Gospels over possible Semitic cultural influences.

2- The Catholic position

The Catholic tradition affirms the doctrine of the perpetual virginity of Mary, according to which Mary remained a virgin before, during and after the birth of Jesus. Within this framework, the “brothers and sisters” of Jesus cannot be understood as children of Mary.

Several interpretations have been proposed to account for the texts:

identification of the “brothers” as cousins or close relatives;

appeal to the broader use of the term “brother” in the Semitic context;

connections between certain figures mentioned in the Gospels in order to propose indirect family ties.

This position rests both on exegetical arguments (flexibility of the vocabulary, cultural context) and on the continuity of the church’s tradition. The doctrine itself belongs to a broader theological reflection on the person of Mary and her role in the history of salvation.

From a methodological point of view, it is important to stress that this reading does not derive solely from the Gospel texts taken in isolation, but from a coherent whole integrating Scripture, tradition and theological interpretation.

3- The position of the Orthodox Churches

The Orthodox Churches generally adopt an intermediate position, identifying the “brothers” of Jesus as half-brothers, born of an earlier marriage of Joseph.

This interpretation makes it possible to:

take seriously the Gospel mentions of the “brothers”;

preserve the virginity of Mary;

rely on ancient traditions found in certain non-canonical Christian writings.

As in the case of the Catholic position, this reading goes beyond the textual data alone and belongs to a broader interpretive tradition.

4- Distinction between exegesis and dogma

The examination of these different positions brings out an essential distinction between cwhat the texts allow us to affirm and what the traditions deduce from them.

Exegesis, understood as the analysis of texts in their context, establishes the existence of “brothers and sisters” of Jesus, without specifying the exact nature of their kinship.

Confessional doctrines, for their part, propose interpretations that belong to broader theological systems and respond to specific concerns.

Thus, the divergence between the Protestant, Catholic and Orthodox positions stems not only from a different reading of the texts, but also from distinct hermeneutical frameworks:

priority given to the literal sense of the text;

taking tradition into account;

the articulation between Scripture and doctrine.

Intermediate conclusion

The confessional interpretations of the “brothers and sisters” of Jesus illustrate how a single textual datum can give rise to diverse readings, depending on theological presuppositions and methods of interpretation.

This diversity does not call into question the reality of the Gospel mentions, but underlines the limits of a strictly historical inquiry. It confirms the need to distinguish clearly between what belongs to the textual data and what belongs to their doctrinal interpretation.

It is now appropriate to offer a critical synthesis that brings out the most solid elements of the analysis, while acknowledging the limits inherent in this type of study.

1- What the texts allow us to affirm with certainty

The examination of the Gospels and of the New Testament writings makes it possible to establish several elements with a high degree of certainty.

First of all, the existence of persons referred to as the “brothers” and “sisters” of Jesus is explicitly attested by several independent sources, notably Matthew 13.55-56, Mark 6.3 and John 2.12. These individuals are integrated into the family circle of Jesus and appear in different narrative contexts.

Next, some of these “brothers” are identified by name: James, Joseph, Simon and Jude. Their repeated presence in the narratives, as well as their later role in the early community (Acts 1.14), lend these data a not insignificant historical consistency.

Finally, the texts bear witness to an evolution in their attitude: initially marked by a form of incomprehension or unbelief (John 7.5), it seems to develop toward integration into the group of disciples after the Paschal events.

These elements constitute the foundation of the historical data accessible from the sources.

2- What belongs to interpretation

On the other hand, the exact nature of the family bond between Jesus and these “brothers and sisters” remains undetermined on the basis of the texts alone.

The lexical analysis of the term adelphos shows that it can designate a biological brother as well as a close relative, particularly in a context marked by the influence of the Semitic languages. Likewise, the extended family framework of first-century Judaism allows a certain flexibility in the use of kinship terms.

Under these conditions, the different hypotheses — biological siblings, half-brothers or cousins — appear as attempts at interpretation aimed at specifying a datum that the texts leave open. None can be established decisively without bringing in external elements or particular presuppositions.

It follows that any categorical assertion concerning the exact nature of this relationship belongs, at least in part, to an interpretive construction.

3- Limits of the historical inquiry

The historical study runs up here against several structural limits.

On the one hand, the Gospels do not pursue the aim of a detailed genealogical description. Their main intention is theological and narrative, centered on the person and mission of Jesus, and not on the precision of family ties in the modern sense.

On the other hand, the linguistic data introduce an ambiguity that cannot be entirely removed. The passage from a Semitic environment to a composition in Greek, combined with the flexible use of kinship terms, makes any definitive conclusion difficult.

Finally, the absence of independent external sources on this precise point limits the possibilities of historical verification. The analysis must therefore be content with a body of converging indications, without being able to reach absolute certainty.

Intermediate conclusion

The synthesis of the data shows that the existence of the “brothers and sisters” of Jesus is a fact solidly attested by the texts. On the other hand, their exact status remains open to interpretation, because of the intrinsic limits of the sources.

This distinction between textual certainty and interpretive indeterminacy is essential for a rigorous approach to the subject.

James and Jude, the authors of the epistles that bear their names, are often identified as the brothers of Jesus.

In the first century, the expression “brother of the Lord” applied to James and, by extension, to the other “brothers” of Jesus such as Jude, seems to have been understood directly and immediately by the early Christian communities, without requiring any particular explanation.

The apostle Paul, in Galatians 1.19, mentions “James, the Lord’s brother” as an obvious point of identification, which presupposes that his recipients grasped the meaning of this designation spontaneously. Likewise, the Gospels present James and Jude in an explicit family setting, alongside the mother of Jesus and his “sisters” (Matthew 13.55; Mark 6.3), without introducing any nuance or restriction in the use of the term. In this context, the Greek word adelphos is used in its ordinary sense, designating a concrete family bond, or at the very least a closeness of kinship immediately intelligible to readers.

Nothing in the New Testament sources suggests that this designation was the object of a particular interpretation or of a debate among the first Christian generations, or that it was understood in a technical or theologically framed sense. Although the Semitic context theoretically allows the term to be extended to close relatives, this possibility is never made explicit in the texts, and nothing indicates that it was the dominant or necessary reading.

Thus, for the first Christians, the expression “brother of Jesus” applied to James and Jude referred above all to a concrete family reality, perceived as obvious and requiring no doctrinal clarification.

James the Greater and James the Just — show the definition INF123