Verses 11-13. - Who hath made man's mouth! God could and would have cured the defect in Moses' speech, whatever it was; could and would have added eloquence to his other gifts, if he had even at this point yielded himself up unreservedly to his guidance and heartily accepted his mission. Nothing is too hard for the Lord. He gives all powers - sight, and hearing, and speech included - to whom he will. He would have been "with Moses' mouth," removing all hesitation or indistinctness, and have "taught him what to say" - supplied the thought and the language by which to express it - if Moses would have let him. But the reply in ver. 13 shut up the Divine bounty, prevented its outpour, and left Moses the ineffective speaker which he was content to be. The words, O my Lord, send, I pray thee, by the hand of him whom Thou wilt send, are curt and ungracious; much curter in the original than in our version. They contain a grudging acquiescence. But for the deprecatory particle with which they commence - the same as in ver. 10, they would be almost rude. And we see the result in the next verse.
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.
And the Lord said unto him, who hath made man's mouth?.... Made that itself, and put in it the power and faculty of speech, even into the mouth of the first man, Adam, as the Targum of Jonathan; and so of every other man, did not the Lord do it? none else could, and therefore he that made it, and made it capable of speaking, could remove any impediments in it, and cause it to speak freely and fluently:
or who maketh the dumb, or deaf, or the seeing, or the blind? have not I, the Lord? as all the senses, and the perfection of them, are from him, so all the imperfections in them are according to his good pleasure; what he suffers to be, and can remedy when he thinks fit: it is he that gives the seeing eye and hearing ear, can and does make blind and deaf, that gives also the speaking mouth, and makes that dumb, and can open it again as he pleases! and what is it that he cannot do?
or who maketh the dumb, or deaf, or the seeing, or the blind? have not I, the Lord? as all the senses, and the perfection of them, are from him, so all the imperfections in them are according to his good pleasure; what he suffers to be, and can remedy when he thinks fit: it is he that gives the seeing eye and hearing ear, can and does make blind and deaf, that gives also the speaking mouth, and makes that dumb, and can open it again as he pleases! and what is it that he cannot do?