Exodus 4:11-12

4:11 The Lord said to him, “Who gave ¹  a mouth to man, or who makes a person mute or deaf or seeing or blind? Is it not I, the Lord? ²  4:12 So now go, and I will be with your mouth ³  and will teach you ⁴  what you must say.” ⁵ 

[4:11]  ¹ tn The verb שִׂים (sim) means “to place, put, set”; the sentence here more precisely says, “Who put a mouth into a man?”

[4:11]  ² sn The final question obviously demands a positive answer. But the clause is worded in such a way as to return to the theme of “I AM.” Isaiah 45:5-7 developed this same idea of God’s control over life. Moses protests that he is not an eloquent speaker, and the Lord replies with reminders about himself and promises, “I will be with your mouth,” an assertion that repeats the verb he used four times in 3:12 and 14 and in promises to Isaac and Jacob (Gen 26:3; 31:3).

[4:12]  ³ sn The promise of divine presence always indicates intervention (for blessing or cursing). Here it means that God would be working through the organs of speech to help Moses speak. See Deut 18:18; Jer 1:9.

[4:12]  ⁴ sn The verb is וְהוֹרֵיתִיךָ (vÿhoretikha), the Hiphil perfect with a vav (ו) consecutive. The form carries the instructional meaning because it follows the imperative “go.” In fact, there is a sequence at work here: “go…and/that I may teach you.” It is from יָרָה (yara), the same root behind תּוֹרָה (torah, “law”). This always referred to teaching either wisdom or revelation. Here Yahweh promises to teach Moses what to say.

[4:12]  ⁵ tn The form is the imperfect tense. While it could be taken as a future (“what you will say”), an obligatory imperfect captures the significance better (“what you must say” or “what you are to say”). Not even the content of the message will be left up to Moses.