41 And Moses answereth and saith, 'And, if they do not give credence to me, nor hearken to my voice, and say, Jehovah hath not appeared unto thee?' 2 And Jehovah saith unto him, 'What 'is' this in thy hand?' and he saith, 'A rod;' 3 and He saith, 'Cast it to the earth;' and he casteth it to the earth, and it becometh a serpent—and Moses fleeth from its presence. 4 And Jehovah saith unto Moses, 'Put forth thy hand, and lay hold on the tail of it;' and he putteth forth his hand, and layeth hold on it, and it becometh a rod in his hand— 5 '—so that they believe that Jehovah, God of their fathers, hath appeared unto thee, God of Abraham, God of Isaac, and God of Jacob.' 6 And Jehovah saith to him again, 'Put in, I pray thee, thy hand into thy bosom;' and he putteth in his hand into his bosom, and he bringeth it out, and lo, his hand 'is' leprous as snow; 7 and He saith, 'Put back thy hand unto thy bosom;' and he putteth back his hand unto his bosom, and he bringeth it out from his bosom, and lo, it hath turned back as his flesh— 8 '—and it hath come to pass, if they do not give credence to thee, and hearken not to the voice of the first sign, that they have given credence to the voice of the latter sign. 9 'And it hath come to pass, if they do not give credence even to these two signs, nor hearken to thy voice, that thou hast taken of the waters of the River, and hast poured on the dry land, and the waters which thou takest from the River have been, yea, they have become—blood on the dry land.'

10 And Moses saith unto Jehovah, 'O, my Lord, I 'am' not a man of words, either yesterday, or before, or since Thy speaking unto Thy servant, for I 'am' slow of mouth, and slow of tongue.' 11 And Jehovah saith unto him, 'Who appointed a mouth for man? or who appointeth the dumb, or deaf, or open, or blind? is it not I, Jehovah? 12 and now, go, and I—I am with thy mouth, and have directed thee that which thou speakest;' 13 and he saith, 'O, my Lord, send, I pray thee, by the hand Thou dost send.' 14 And the anger of Jehovah burneth against Moses, and He saith, 'Is not Aaron the Levite thy brother? I have known that he speaketh well, and also, lo, he is coming out to meet thee; when he hath seen thee, then he hath rejoiced in his heart, 15 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; 16 and he, he hath spoken for thee unto the people, and it hath come to pass, he—he is to thee for a mouth, and thou—thou art to him for God; 17 and this rod thou dost take in thy hand, with which thou doest the signs.'

Matthew Henry's Commentary on Exodus 4:1-17

Commentary on Exodus 4:1-9

(Read Exodus 4:1-9)

Moses objects, that the people would not take his word, unless he showed them some sign. God gives him power to work miracles. But those who are now employed to deliver God's messages to men, need not the power to work miracles: their character and their doctrines are to be tried by that word of God to which they appeal. These miracles especially referred to the miracles of the Lord Jesus Christ. It belonged to Him only, to cast the power of the devil out of the soul, and to heal the soul of the leprosy of sin; and so it was for Him first to cast the devil out of the body, and to heal the leprosy of the body.

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.