Catholic Commentary
The Setting of the Sermon on the Mount
1Seeing the multitudes, he went up onto the mountain. When he had sat down, his disciples came to him.2He opened his mouth and taught them, saying,
Matthew 5:1–2 describes Jesus ascending a mountain and sitting to teach his disciples with formal authority, a posture that invokes the image of Moses receiving the Torah on Sinai. By sitting and opening his mouth to speak, Jesus assumes the role of sovereign teacher and lawgiver, signaling that what follows is weighty, authoritative instruction rather than casual commentary.
Jesus ascends the mountain not as a mediator of the law but as its Author, deliberately echoing and surpassing Moses—the entire theological weight of the Incarnation compressed into a posture and a gesture.
The Typological and Spiritual Senses:
Typologically, the New Moses motif culminates here before a word of the Beatitudes is spoken. Allegorically, the mountain represents the height of Christian perfection toward which the disciple is called to ascend. The anagogical sense points to the heavenly Jerusalem, the mountain of God's eternal dwelling (Revelation 21), to which the Sermon ultimately directs human longing. Morally, the act of Jesus sitting and opening his mouth calls disciples in every age to the posture of attentive receptivity — we approach, we sit at his feet, and we listen.
Catholic tradition reads these two verses as a Christological manifesto embedded in scenery. The Church Fathers were unanimous in recognizing the Moses typology and in insisting on what it reveals about Christ's divine identity. St. Augustine, whose monumental De Sermone Domini in Monte (On the Sermon on the Mount) remains the foundational patristic commentary on this passage, writes: "He who spoke to Moses on the mountain, the same speaks now on the mountain — but then through a servant, now in his own person." This distinction — per famulum vs. in propria persona — is Augustine's way of articulating Christ's divinity through narrative detail.
St. John Chrysostom (Homilies on Matthew, Homily 15) highlights the pedagogical significance of the posture and location: "He taught sitting, that we might understand the dignity of the Lawgiver." For Chrysostom, every detail of the scene instructs the believer about how to receive Christ's words.
The Catechism of the Catholic Church (§581) explicitly situates Jesus' relationship to the Torah within this framework: "Jesus, Israel's Messiah and therefore the greatest in the kingdom of heaven, was to fulfill the Law by keeping it in its totality — its minutest precepts — in his very person." The Sermon on the Mount is therefore not the abrogation of the old law but its interior completion. Vatican II's Dei Verbum (§15–16) affirms that the New Testament fulfills the Old, with the Sermon on the Mount as a paradigmatic instance.
Pope Benedict XVI, in Jesus of Nazareth (Part One, Chapter 4), devotes sustained attention precisely to these opening verses, arguing that Matthew's mountain is a theological topos of encounter with the living God, and that Jesus' seated teaching posture signals that "he speaks on the basis of himself" — unlike any prophet who said "thus says the Lord," Jesus says simply "I say to you."
For the contemporary Catholic, these two verses issue a quiet but demanding challenge: Come close and sit down. In an era of fragmented attention and relentless noise, Matthew's description of the disciples approaching and the crowd receding draws a distinction that remains spiritually urgent. The Sermon on the Mount is not primarily a social manifesto or an ethical program to be implemented — it is teaching received in discipleship, in proximity to Jesus. It demands a posture, not merely a policy.
Practically, this means the Catholic reader must resist approaching the Beatitudes and the rest of the Sermon as a checklist or a political platform. The disciples came to him — the whole Sermon flows from relationship, not mere religion. For Catholics navigating a fractured, politicized culture in which even the words of Jesus are co-opted by competing agendas, these verses offer a corrective: return to the mountain, sit at his feet, and let him open his mouth to you before you open yours to the world. Lectio Divina with the Sermon on the Mount, practiced with the Church's interpretive tradition as a guide, is one concrete response to this text.
Commentary
Verse 1: "Seeing the multitudes, he went up onto the mountain."
Matthew's Greek is precise: the crowds (οἱ ὄχ��οι, hoi ochloi) are the occasion, but the mountain is the destination. Jesus does not address the crowd from the plain; he ascends. This detail is laden with Old Testament resonance. In Matthew's Gospel, mountains are consistently sites of divine encounter, revelation, and authority: the temptation (4:8), the Transfiguration (17:1), the Great Commission (28:16). The definite article in many manuscripts ("the mountain") suggests Matthew may be pointing to a specific theological geography rather than a simple topographic note — this is the mountain of revelation.
The typological identification with Moses is unmistakable and almost certainly intentional on Matthew's part. Moses ascended Sinai to receive the Torah from God (Exodus 19–20); Jesus ascends the mountain to deliver the new law from himself, on his own authority. The structural parallelism of Matthew's Gospel with the Pentateuch — five great discourses mirroring the five books of Moses — reinforces that the Sermon on the Mount is Matthew's Sinai moment. Yet there is a crucial inversion: Moses went up to receive; Jesus goes up to give. He is not the mediator of the law but its Author.
Verse 1 continued: "When he had sat down, his disciples came to him."
The posture of sitting (ἐκάθισεν, ekathisen) is not incidental. In first-century Jewish practice, the authoritative teacher sat to deliver binding instruction — the famous "chair of Moses" (Matthew 23:2) reflects this tradition. A standing teacher might exhort or extemporize; a seated teacher pronounces with magisterial weight. By sitting, Jesus assumes the posture of the authoritative interpreter of the Torah, and indeed its sovereign Lord. It is also worth noting that it is the disciples who draw near — the multitudes are present (v.1) but it is those already following Jesus who receive the fullness of this teaching. This distinction anticipates the Church as the community entrusted with Christ's authoritative word.
Verse 2: "He opened his mouth and taught them, saying,"
The phrase "opened his mouth" (ἀνοίξας τὸ στόμα αὐτοῦ, anoixas to stoma autou) is a Semitic idiom that signals solemn, weighty utterance — not casual conversation but formal, considered pronouncement. It appears in the Septuagint in contexts of prophetic speech and wisdom (cf. Job 3:1; Psalm 78:2, cited in Matthew 13:35). Matthew uses it to signal that what follows is not one rabbi's interpretation among many, but a definitive, authoritative word. The verb "taught" (ἐδίδασκεν, ) is imperfect, suggesting continuous, sustained teaching — not a single pronouncement but an unfolding discourse. Together, these two verbs (opened, taught) frame what follows as both solemn and comprehensive.