Exodus 4:15 · Bible study
Exodus 4:15 Commentary: Study: Divine Help for Unlikely Messengers
Hebrew · 9 what the commentators say
Meaning in one sentence
Examine Exodus 4:15 and God's promise to guide Moses and Aaron. Commentary, historical context, and discussion questions for deep study.
Research Summary
- Meaning: God promises to be with both Moses and Aaron, teaching them what to say and do, overcoming Moses’ speech difficulty through partnership and divine presence.
- Key words: “put” (H7760, שׂוּם, to set or appoint), “mouth” (H6310, פֶּה, organ of speech), “teach” (H3384, יָרָה, to direct, instruct, point out).
- Main debate: Whether the “words” refer to specific content (the message to Pharaoh) or general authority; most commentators see both aspects.
- Geological theme: Divine enablement for human inadequacy; partnership in God’s mission; mediation between God and people.
- Best use: Encouraging those who feel unqualified; teaching about cooperative ministry and dependence on God for words and wisdom.
Translation Comparison
BSB Berean Standard Bible 2020
You are to speak to him and put the words in his mouth. I will help both of you to speak, and I will teach you what to do.
WEB World English Bible 2000
You shall speak to him, and put the words in his mouth. I will be with your mouth, and with his mouth, and will teach you what you shall do.
KJV King James Version 1769
And thou shalt speak unto him, and put words in his mouth: and I will be with thy mouth, and with his mouth, and will teach you what ye shall do.
ASV American Standard Version 1901
And thou shalt speak unto him, and put the words in his mouth: and I will be with thy mouth, and with his mouth, and will teach you what ye shall do.
YLT Young's Literal Translation 1898
and thou hast spoken unto him, and hast set the words in his mouth, and I--I am with thy mouth, and with his mouth, and have directed you that which ye do;
Darby Darby Bible 1890
And thou shalt speak unto him, and put the words in his mouth; and I will be with thy mouth, and with his mouth, and will teach you what ye shall do.
Douay-Rheims Douay-Rheims Bible 1899
Speak to him, and put my words in his mouth: and I will be in thy mouth, and in his month, and will shew you what you must do.
Translations in other languages (10 available)
Tú hablarás á él, y pondrás en su boca las palabras, y yo seré en tu boca y en la suya, y os enseñaré lo que hayáis de hacer.
Tu falarás a ele, e porás em sua boca as palavras, e eu serei em tua boca e na sua, e vos ensinarei o que deveis fazer.
Tu lui parleras, et tu mettras les paroles dans sa bouche; et moi, je serai avec ta bouche et avec sa bouche, et je vous enseignerai ce que vous aurez à faire.
Du sollst zu ihm reden und die Worte in seinen Mund legen. Und ich will mit deinem und seinem Munde sein und euch lehren, was ihr tun sollt.
Gij dan zult tot hem spreken, en de woorden in zijn mond leggen; en Ik zal met uw mond, en met zijn mond zijn; en Ik zal ulieden leren, wat gij doen zult.
Tu gli parlerai, e gli metterai le parole in bocca; io sarò con la tua bocca e con la bocca sua, e v’insegnerò quello che dovrete fare.
I będziesz mówił do niego, i włożysz słowa w usta jego, a Ja będę z usty twemi, i z usty jego, i nauczę was, co byście mieli czynić.
ты будешь ему говорить и влагать слова [Мои] в уста его, а Я буду при устах твоих и при устах его и буду учить вас, что вам делать;
你要將 當說 的話 傳 給他；我 也要 賜 你 和 他口才，又要指教 你們 所 當行的事。
Let him give ear to your voice, and you will put my words in his mouth; and I will be with your mouth and with his, teaching you what you have to do.
Verse in Context
Original Language (Biblical Hebrew)
Old Testament · Biblical Hebrew · Exodus 4:15
Source: STEPBible TAGNT/TEHB (CC-BY 4.0). Click or tap a morphology code to see the full parsing.
Scholars' Consensus
Commentators agree that this verse shows God's gracious response to Moses' fear of inadequacy. Moses is to speak to Aaron and put words in his mouth, retaining his role as the primary mediator (Barnes). God then promises, “I will be with your mouth, and with his mouth, and will teach you what you shall do.” Gill notes that Moses supplies the matter and Aaron the expression, yet both are dependent on the Lord. Wesley adds that even Aaron, who could speak well, needed God to be with his mouth. The consensus is clear: human eloquence is insufficient; divine enablement is essential for both the leader and the spokesperson.
How settled is the interpretation?
Interpretive difficulty: Low
What is clear: God promises his presence and teaching for both Moses and Aaron, ensuring that the mission to speak to Israel and Pharaoh will be accomplished.
What Scholars Agree and Debate
| Topic | Agreed | Debated |
|---|---|---|
| The nature of the words placed in Aaron’s mouth | All traditions agree God provides the message; Moses mediates and Aaron delivers. | Some emphasize that Moses speaks the specific divine words to Aaron; others hold that the content is determined by God’s ongoing instruction, not just initial transmission. |
| The meaning of Moses being “as God” to Aaron | Both Catholic and Protestant interpreters see this as a role of authority and revelation, not ontological equality. | Catholics may highlight the hierarchical mediation as a type of apostolic succession; Protestants often stress that only God is the ultimate source, and Moses is merely a servant. |
| The extent of God’s involvement in human speech | All agree that God enables and directs the words of both Moses and Aaron. | Calvinist traditions might emphasize God’s sovereign control over every word; Arminian traditions see it as God’s gracious assistance that still requires human cooperation. |
Historical & Cultural Context
This verse comes in the middle of Moses’ call narrative, a sequence marked by his persistent objections. After the burning bush, Moses first questions his own worth (Ex 3:11), then the people’s willingness to believe (Ex 4:1). In verses 10, 13, he pleads a speech impediment: “I am not eloquent” (Ex 4:10). God’s reply in verse 11 reminds Moses that he made the mouth; verse 12 promises to be with his mouth. Yet Moses still begs to be excused, provoking God’s anger (v.14). The divine response is to appoint Aaron, described as “the Levite” and one who “can speak well” (v.14). The phrase “put the words in his mouth” echoes the commissioning of a prophet (cf. Num 22:38; 23:5,12,16). In the ancient Near East, a spokesman functioned as a living mouthpiece for a king or deity. Exodus 7:1 makes this explicit: “Aaron your brother shall be your prophet.” Moses, in turn, acts “instead of God” to Aaron. This hierarchical structure, God to Moses, Moses to Aaron, Aaron to the people, mirrors the mediation pattern that later defines Israel’s prophetic office. The setting also carries weight: the Israelites are slaves in Egypt, and Moses has been a fugitive in Midian for forty years. His reluctance is understandable, but God’s provision of Aaron, combined with the repeated promise “I will be with your mouth,” shows that the mission will succeed not by human skill but by divine presence.
Textual Notes
The supplied sources note no significant textual variants for Exodus 4:15. The Hebrew manuscript tradition is stable, and translations consistently render the verse with the same meaning.
Reception History
Exodus 4:15 has been used across Christian history to illustrate God’s care for inadequate servants. Early church fathers, such as Augustine, drew on the passage to argue that God can use imperfect instruments. In the Reformation, both Luther and Calvin highlighted that true preaching depends not on human eloquence but on divine calling and assistance. This verse has comforted many pastors and lay leaders who feel they lack the skills for their task, reminding them that God supplements ability with presence.
Preaching This Verse
Three-point outline
- God acknowledges our limitations. Moses’ speech difficulty is not dismissed; God meets it head-on.
- God provides partners for the task. Aaron is given as a spokesperson, showing that ministry is rarely solo.
- God promises his presence in both. The repeated “I will be with your mouth” reassures that the source of effectiveness is God himself.
Five-point outline
- Moses’ reluctance uncovers a deeper heart issue (v.13), and God still provides a way forward.
- The partnership of Moses and Aaron mirrors the relationship between prophet and messenger.
- The source of words is divine: “I will teach you what you shall do.” Content and delivery come from God.
- Both leaders remain dependent on grace; Aaron’s eloquence is no substitute for God’s enabling.
- This passage encourages everyone who feels unqualified: God does not call the equipped; he equips the called.
Illustration hooks
- A person who fears public speaking but is asked to lead a prayer or read Scripture in church, the reassurance comes from knowing God supplies the words.
- A team project where one person has the vision and another has the communication skills, both need to rely on the same source for wisdom.
- A parent nervous about explaining faith to their children, the parent can trust God to give timely and appropriate words.
Questions your congregation is asking
- “Why would God choose someone who doesn’t want to go?”
- “How can I trust God to give me the right words in a difficult conversation?”
- “If I feel inadequate, does that disqualify me from serving?”
Leading a Discussion
This verse sits at a turning point in Moses’ call. God has just responded to Moses’ objection about poor speech, not by removing the limitation, but by supplying a partner and promising divine assistance. The discussion below explores what this means for how we think about ability, calling, and dependence on God.
Discussion questions
- Read Exodus 4:10, 15. What reasons does Moses give for not wanting to go? How does God respond each time?
- In verse 15, God tells Moses to “put the words in his mouth.” What does this imply about Moses’ role and Aaron’s role?
- Why does God promise to be with “your mouth” and “his mouth” both? What does this show about God’s view of human limitations?
- Compare verse 15 with verse 12. What is similar? What changes when Aaron is introduced?
- How does the phrase “I will teach you what you shall do” extend beyond just speaking? What other aspects of mission might need divine teaching?
- In what areas of your own life do you feel inadequate like Moses? How does this promise speak to those areas?
- How can this passage shape the way we support others who are stepping into roles they feel unfit for?
Word Study
The key original-language words in this verse. Select any word for its full lexicon entry — meaning, every occurrence in Scripture, and related words.
Cross-References
Source: Treasury of Scripture Knowledge (TSK, public domain)
| Exodus 4:12 | Now therefore go, and I will be with your mouth, and teach you what you shall speak.” |
| Exodus 7:1 | Yahweh said to Moses, “Behold, I have made you as God to Pharaoh; and Aaron your brother shall be your prophet. |
| Exodus 7:2 | You shall speak all that I command you; and Aaron your brother shall speak to Pharaoh, that he let the children of Israel go out of his land. |
| Numbers 22:38 | Balaam said to Balak, “Behold, I have come to you. Have I now any power at all to speak anything? I will speak the word that God puts in my mouth.” |
| Numbers 23:5 | Yahweh put a word in Balaam’s mouth, and said, “Return to Balak, and thus you shall speak.” |
| Numbers 23:12 | He answered and said, “Must I not take heed to speak that which Yahweh puts in my mouth?” |
| Numbers 23:16 | Yahweh met Balaam, and put a word in his mouth, and said, “Return to Balak, and say this.” |
| Deuteronomy 5:31 | But as for you, stand here by me, and I will tell you all the commandments, and the statutes, and the ordinances, which you shall teach them, that they may do them in the land which I give them to possess.” |
Interlinear and lexical data from STEPBible (CC BY 4.0). Cross-reference data from OpenBible.info (CC BY 4.0). Commentaries are public domain.
For personal reflection
Read the devotional page — prayer, application, and "for families"
What the Commentators Say
8 public-domain commentaries, condensed into plain language.
Adam Clarke's Commentary Methodist/Wesleyan 1826
I will be with thy mouth, and with his mouth - Ye shall be both, in all things which I appoint you to do in this business, under the continual inspiration of the Most High.
Barnes' Notes on the Bible Protestant 1832
Barnes emphasizes that Moses keeps his role as mediator even when Aaron is involved. God speaks directly to Moses, and only then does Moses pass the word to his brother. Moses remains the primary recipient and transmitter of divine revelation.
Cambridge Bible for Schools and Colleges Anglican 1880
The commentator highlights that God addresses Moses’ objection about lack of fluency by making Aaron his spokesman. Aaron functions as Moses’ prophet, speaking the words Moses gives him. The Hebrew phrase “as God” (or “as a god”) indicates that Moses inspires Aaron just as God inspires a prophet.
Geneva Bible Notes Reformed 1599
God promises to be present with both Moses and Aaron, teaching them together what to say and do. The emphasis is on divine enablement: Moses speaks God's words to Aaron, and God Himself guides both their mouths. The message originates entirely from God, not human wisdom.
Gill's Exposition of the Bible Baptist 1748
Gill highlights the division of labor: Moses supplied the substance of what to say, and Aaron used his eloquence to express it fluently. Yet both men were equally dependent on God, who guided and enabled their speech and actions.
Keil & Delitzsch OT Commentary Protestant 1876
Keil-Delitzsch sees the real issue not as Moses' speech difficulty but as his hidden unwillingness to accept the mission. God's anger burned at this groundless refusal, yet mercy still provided Aaron. They also note that calling Aaron "the Levite" carries no allusion to the tribe's future prophetic calling.
Matthew Henry's Commentary Reformed/Presbyterian 1710
Henry notes that Moses' continued excuses here can no longer be credited to humility or modesty. What now appears is cowardice, slothfulness, and unbelief. Though Moses claimed he was not eloquent, Henry observes he was mighty in word, so the real problem was not inability but unwillingness to obey God's call.
Wesley's Explanatory Notes Methodist/Wesleyan 1754
Wesley stresses that even Aaron, a skilled speaker, could not speak effectively without God's constant grace. Natural gifts, however strong, fall short without the continuous assistance of divine power working through the speaker.