Exodus 6:10–13

Faced with a divine command to confront Pharaoh a second time, Moses protests that his own "uncircumcised lips" disqualify him from being heard — a crisis of self-doubt following Israel's failure to receive his earlier words. God responds not by removing the obstacle but by renewing the commission jointly to Moses and Aaron, pairing human weakness with divine authority. The passage reveals the paradoxical logic of God's call: he does not revoke the mission when the messenger falters, but instead deepens the structure of delegation through which redemption will come.

Verse 10–11 — The Renewed Command God's direct speech to Moses ("Yahweh spoke to Moses, saying") resumes the imperative interrupted by the genealogical register of vv. 14–27 — but its placement here, immediately after Israel's crushing disappointment and Moses' first complaint (6:1–9), is deliberately stark. The command is virtually identical to previous divine commissions (3:10; 5:1), and that repetition is itself theologically loaded: God does not revise his plan because Pharaoh hardened his heart or because Israel stopped listening. The divine purpose moves forward regardless of human resistance or institutional failure. The phrase "that he let the children of Israel go out of his land" frames the exodus entirely from Pharaoh's perspective — the land belongs to the oppressor in his own reckoning — yet the command issued from beyond that reckoning will ultimately dissolve his ownership entirely.

Verse 12 — "Uncircumcised Lips" Moses' protest is among the most theologically dense self-descriptions in all of Torah. The Hebrew expression ăral śĕpātayim ("uncircumcised of lips") is unique to Exodus (cf. 6:30) and draws on the covenant sign of circumcision in a startling metaphorical inversion. Circumcision marks membership in the covenant people, the cutting away of what is superfluous so that the flesh is consecrated to God. Moses applies this image to his speech: his lips have not undergone that consecrating transformation. They remain "uncircumcised" — unsanctified, unfit, obstructed in their communicative function. This may refer to a genuine speech impediment (cf. 4:10, where Moses calls himself "not eloquent… slow of speech"), but the symbolic register is equally important: Moses is confessing a kind of ritual or covenantal unworthiness for the prophetic office.

His logic is compelling in its humility: if the covenant people themselves, who have every reason to receive God's word, did not listen to Moses (v. 9 attributes their inability to "anguish of spirit and cruel bondage"), how could a foreign, uncircumcised king be expected to hear him? The argument moves from the lesser to the greater — a form of reasoning (qal wahomer in rabbinic tradition) that highlights the apparent absurdity of the mission. Moses is not refusing; he is flagging what he perceives as the mission's structural impossibility.

Verse 13 — The Joint Commission The divine response is notable for what it does not do: God does not refute Moses' argument. Instead, he expands the commission. Where previously Moses alone was addressed (vv. 10–12), now both "Moses and Aaron" receive the mandate — a pattern already established at 4:14–16, where Aaron was appointed as Moses' "mouth." This joint commissioning reframes Moses' weakness not as a disqualification but as the very occasion for a richer form of mediation. Aaron becomes the voice through which Moses' prophetic reception of God's word reaches Pharaoh, and together they carry the command "to the children of Israel, and to Pharaoh king of Egypt." The double audience — Israel and Pharaoh — underlines that the exodus is simultaneously a work of liberation for the enslaved and a work of judgment-revelation for the enslaver. Moses and Aaron are not simply petitioners; they are bearers of a divine decree that will unfold through the plagues and culminate in the Passover.

Catholic tradition reads Moses' "uncircumcised lips" as a figure of the human condition before the transforming grace of God. St. Gregory of Nyssa, in his Life of Moses, treats the entire Mosaic narrative as a mystical itinerary: Moses' repeated protests at the burning bush and here in chapter 6 are not failures of faith but honest confrontations with the creature's radical insufficiency before a holy God. Gregory sees Moses' willingness to articulate his weakness as itself a form of spiritual purification — the precondition for genuine divine mission.

The Catechism of the Catholic Church teaches that God "calls each one by name" (CCC 2158) and that the prophetic vocation is never merely natural talent deployed for a sacred purpose, but a divine reshaping of the person. Moses' objection makes this visible: the one God calls is precisely not, in his own estimation, adequate to the task. This is consistent with Paul's principle that "God chose what is weak in the world to shame the strong" (1 Cor 1:27), which patristic and scholastic tradition alike regards as the characteristic divine modus operandi in redemptive history.

The pairing of Moses and Aaron in v. 13 carries ecclesiological resonance for Catholic readers. St. Augustine noted that Moses and Aaron together prefigure the dual dimensions of Christ's own office — Moses the lawgiver-prophet bearing the word received in contemplation, Aaron the priestly mediator who speaks it publicly and offers sacrifice. In the Church, this duality is institutionally preserved in the unity of the prophetic and priestly offices conferred in Holy Orders. The Magisterium (cf. Lumen Gentium 28) similarly describes the ordained minister as one who "acts in the person of Christ" precisely by speaking and interceding on behalf of those who, in their bondage, cannot yet receive the word for themselves.

Circumcision of the lips finds its New Covenant fulfillment at Pentecost, when the Spirit rests upon the apostles and transforms hesitant, frightened disciples into bold proclaimers — the "uncircumcised lips" consecrated at last by fire.

Moses' confession — "I have uncircumcised lips" — is the ancient expression of an experience Catholics know intimately: being called to speak truth in a situation where every human calculation says no one will listen. The parent who must speak the faith to a child who has walked away from the Church, the employee who must raise an ethical objection in a hostile workplace, the catechist who feels intellectually overwhelmed — each inhabits Moses' position before Pharaoh.

The passage offers two concrete spiritual anchors. First, God does not demand that we resolve our inadequacy before obeying; he expands the structure of support around us instead. Moses got Aaron; the Catholic finds the sacramental life, the community of the Church, spiritual direction, and intercessory prayer — all forms of the "Aaron" God provides so that no one speaks alone.

Second, the renewal of the commission in v. 13 despite Moses' protest teaches perseverance in vocation through discouragement. Many Catholics abandon apostolic endeavors — evangelization, service, advocacy — when initial efforts are met with silence or rejection, mirroring Israel's failure to listen in v. 9. God's word to Moses is that apparent failure is not mission's end; it is frequently its precondition. The Rosary's meditation on the Sorrowful Mysteries offers the same logic: the cross looks like failure before it reveals itself as redemption.