10 Moses raised another objection to God: "Master, please, I don't talk well. I've never been good with words, neither before nor after you spoke to me. I stutter and stammer." 11 God said, "And who do you think made the human mouth? And who makes some mute, some deaf, some sighted, some blind? Isn't it I, God? 12 So, get going. I'll be right there with you - with your mouth! I'll be right there to teach you what to say." 13 He said, "Oh, Master, please! Send somebody else!" 14 God got angry with Moses: "Don't you have a brother, Aaron the Levite? He's good with words, I know he is. He speaks very well. In fact, at this very moment he's on his way to meet you. When he sees you he's going to be glad. 15 You'll speak to him and tell him what to say. I'll be right there with you as you speak and with him as he speaks, teaching you step by step. 16 He will speak to the people for you. He'll act as your mouth, but you'll decide what comes out of it. 17 Now take this staff in your hand; you'll use it to do the signs."
Matthew Henry's Commentary on Exodus 4:10-17
Commentary on Exodus 4:10-17
(Read Exodus 4:10-17)
Moses continued backward to the work God designed him for; there was much of cowardice, slothfulness, and unbelief in him. We must not judge of men by the readiness of their discourse. A great deal of wisdom and true worth may be with a slow tongue. God sometimes makes choice of those as his messengers, who have the least of the advantages of art or nature, that his grace in them may appear the more glorious. Christ's disciples were no orators, till the Holy Spirit made them such. God condescends to answer the excuse of Moses. Even self-diffidence, when it hinders us from duty, or clogs us in duty, is very displeasing to the Lord. But while we blame Moses for shrinking from this dangerous service, let us ask our own hearts if we are not neglecting duties more easy, and less perilous. The tongue of Aaron, with the head and heart of Moses, would make one completely fit for this errand. God promises, I will be with thy mouth, and with his mouth. Even Aaron, who could speak well, yet could not speak to purpose, unless God gave constant teaching and help; for without the constant aid of Divine grace, the best gifts will fail.