Catholic Commentary
The Invading Army of the Day of the LORD (Part 2)
11Yahweh thunders his voice before his army, for his forces are very great; for he is strong who obeys his command; for the day of Yahweh is great and very awesome, and who can endure it?
Joel 2:11 reveals that Yahweh himself commands the devastating army described throughout the passage, using divine thunder to launch judgment against disobedient Israel. The rhetorical question "who can endure it?" emphasizes the terror of the Day of Yahweh and invites repentance by breaking hardened consciences.
God thunders his command not as Israel's protector but as the enforcer of covenant judgment—and the terror is meant to crack open a hardened heart for repentance.
"And who can endure it?"
The rhetorical question expecting the answer "no one" is a standard prophetic device (cf. Amos 5:18; Nahum 1:6; Mal 3:2). It is not designed to induce despair but repentance. Immediately following in Joel 2:12–13, God calls Israel to "return to me with all your heart." The rhetorical terror of verse 11 is the necessary preparation for the invitation to conversion that follows. Spiritually, the question "who can endure it?" is the existential shock that breaks open a hardened conscience.
Catholic tradition identifies Joel 2:11 as a key prophetic witness to the absolute sovereignty of God over history and creation — what the Catechism calls God's omnipotence expressed not as brute force but as the irresistible power of his Word (CCC 268–269). The phrase "mighty is the one who executes his word" anticipates the New Testament theology of the Logos (John 1:1–3), in which all things are created and governed through the divine Word. St. Cyril of Alexandria, commenting on Joel, saw the army of God as a figure of the angels who carry out divine judgment, an interpretation echoed by later Latin commentators like St. Jerome in his Commentary on Joel.
The "Day of Yahweh" theology is particularly significant for Catholic eschatology. The Catechism teaches that Christ's Second Coming will be a Day of judgment (CCC 1038–1041) that both fulfills and surpasses the Old Testament Yom YHWH. St. Peter's application of Joel 2 at Pentecost (Acts 2:16–21) reveals the typological structure: the "terrible day" is simultaneously the day of Christ's passion and outpoured Spirit, and the day of final consummation. Catholic tradition thus reads Joel 2:11 on three levels simultaneously — historical (the locust plague), christological (the passion and Pentecost), and eschatological (the Last Judgment). Pope Benedict XVI, in Verbum Domini (§2), emphasized that the prophetic word is never merely historical prediction but a living address to every generation, which captures precisely how the Church has always received this verse.
Joel 2:11's rhetorical question — "Who can endure it?" — is a spiritually productive one for contemporary Catholics to sit with, not as an exercise in fear but as a diagnostic of the soul's relationship to God's holiness. In an age that tends to domesticate God into a source of affirmation, this verse insists that authentic encounter with the divine is also encounter with transcendent justice. The Sacrament of Confession is the Church's concrete answer to Joel's question: precisely because no one can "endure" standing unprotected before God's holiness, Christ has opened a path of merciful return. Pope Francis, in Misericordiae Vultus (§17), called the Jubilee an extended invitation to rediscover that God's mercy does not negate his justice but fulfills it. Catholics might use Joel 2:11 as an examination of conscience prompt: Am I treating God's patience as indifference? The thunder of his voice before his army is also, paradoxically, the voice that in the very next verse says, "Return to me with all your heart."
Commentary
Joel 2:11 — "Yahweh thunders his voice before his army"
The pivot of the entire passage arrives here: after nine verses describing an invincible, terrifying army — one that darkens the sun, sets mountains trembling, and moves with the inexorable precision of soldiers who never break ranks — Joel at last names the commanding general. It is Yahweh himself. The Hebrew verb used for "thunders" (נָתַן קוֹלוֹ, natan qolo) is a technical idiom in the Hebrew Bible for the divine voice as thunder. This is not merely loud speech; it is the thunderclap that precedes the storm, the military cry a commander issues to launch an assault. The image deliberately evokes the theophany traditions of the Hebrew Bible — Sinai (Exodus 19), the Psalms of divine kingship (Ps 29), and the storm-warrior imagery of the ancient Near East — but subverts them: Yahweh is not fighting for Israel here. He is marching against a disobedient people through an army of plague and destruction.
"For his camp is very great"
The size of Yahweh's host is stressed not to inspire military pride but existential dread. The "camp" (מַחֲנֶה, machaneh) is the same word used for the Israelite wilderness camp, now ironically applied to a force arrayed against Israel's descendants. The greatness of the army amplifies the greatness of its Lord, a rhetorical intensification that pushes the reader toward the terror of divine majesty.
"For mighty is the one who executes his word"
This phrase is theologically crucial. The army — whether the historical locusts, the Assyrian or Babylonian forces, or the eschatological host — is described as mighty not in its own right, but because it executes God's word. The Hebrew עָצוּם (atzum, mighty/powerful) is the same adjective used for Israel's enemies in the conquest narratives. Here it is turned on Israel's covenant failures. The army is, in effect, the living enforcement of the covenant curses of Deuteronomy 28.
"For the Day of Yahweh is great and very terrible"
The phrase "Day of Yahweh" (יוֹם יְהוָה, Yom YHWH) reaches its most concentrated expression in this half-verse. Joel has been building toward this declaration since 1:15. The doubling of the adjective — great and very terrible — mimics the intensification of a military drum-roll. The Day is not merely an event; it is a mode of divine self-disclosure, a moment when the full weight of God's holiness and justice becomes historically tangible.