It was a very great honour that Moses was called to when God commissioned him to bring Israel out of Egypt; yet he is with difficulty persuaded to accept the commission, and does it at last with great reluctance, which we should rather impute to a humble diffidence of himself and his own sufficiency than to any unbelieving distrust of God and his word and power. Note, Those whom God designs for preferment he clothes with humility; the most fit for service are the least forward. I. Moses objects that in all probability the people would not hearken to his voice (Exo 4:1), that is, they would not take his bare word, unless he showed them some sign, which he had not been yet instructed to do. This objection cannot be justified, because it contradicts what God had said (Exo 3:18), They shall hearken to thy voice. If God says, They will, does it become Moses to say, They will not? Surely he means, "Perhaps they will not at first, or some of them will not." If there should be some gainsayers among them who would question his commission, how should he deal with them? And what course should he take to convince them? He remembered how they had once rejected him, and feared it would be so again. Note, 1. Present discouragements often arise from former disappointments. 2. Wise and good men have sometimes a worse opinion of people than they deserve. Moses sad (Exo 4:1), They will not believe me; and yet he was happily mistaken, for it is said (Exo 4:31), The people believed; but then the signs which God appointed in answer to this objection were first wrought in their sight. II. God empowers him to work miracles, directs him to three particularly, two of which were now immediately wrought for his own satisfaction. Note, True miracles are the most convincing external proofs of a divine mission attested by them. Therefore our Saviour often appealed to his works (as Joh 5:36), and Nicodemus owns himself convinced by them, Joh 3:2. And here Moses, having a special commission given him as a judge and lawgiver to Israel, has this seal affixed to his commission, and comes supported by these credentials. 1. The rod in his hand is made the subject of a miracle, a double miracle: it is but thrown out of his hand and it becomes a serpent; he resumes it and it becomes a rod again, Exo 4:2-4. Now, (1.) Here was a divine power manifested in the change itself, that a dry stick should be turned into a living serpent, a lively one, so formidable a one that Moses himself, on whom, it should seem, it turned in some threatening manner, fled from before it, though we may suppose, in that desert, serpents were no strange things to him; but what was produced miraculously was always the best and strongest of the kind, as the water turned to wine: and, then, that this living serpent should be turned into a dry stick again, this was the Lord's doing. (2.) Here was an honour put upon Moses, that this change was wrought upon his throwing it down and taking it up, without any spell, or charm, or incantation: his being empowered thus to act under God, out of the common course of nature and providence, was a demonstration of his authority, under God, to settle a new dispensation of the kingdom of grace. We cannot imagine that the God of truth would delegate such a power as this to an impostor. (3.) There was a significancy in the miracle itself. Pharaoh had turned the rod of Israel into a serpent, representing them as dangerous (Exo 1:10), causing their belly to cleave to the dust, and seeking their ruin; but now they should be turned into a rod again: or, thus Pharaoh had turned the rod of government into the serpent of oppression, from which Moses had himself fled into Midian; but by the agency of Moses the scene was altered again. (4.) There was a direct tendency in it to convince the children of Israel that Moses was indeed sent of God to do what he did, Exo 4:5. Miracles were for signs to those that believed not, Co1 14:22. 2. His hand itself is next made the subject of a miracle. He puts it once into his bosom, and takes it out leprous; he puts it again into the same place, and takes it out well, Exo 4:6, Exo 4:7. This signified, (1.) That Moses, by the power of God, should bring sore diseases upon Egypt, and that, at his prayer, they should be removed. (2.) That whereas the Israelites in Egypt had become leprous, polluted by sin, and almost consumed by oppression (a leper is as one dead, Num 12:12), by being taken into the bosom of Moses they should be cleansed and cured, and have all their grievances redressed. (3.) That Moses was not to work miracles by his own power, nor for his own praise, but by the power of God and for his glory; the leprous hand of Moses does for ever exclude boasting. Now it was supposed that, if the former sign did not convince, this latter would. Note, God is willing more abundantly to show the truth of his word, and is not sparing in his proofs; the multitude and variety of the miracles corroborate the evidence. 3. He is directed, when he shall come to Egypt, to turn some of the water of the river into blood, Exo 4:9. This was done, at first, as a sign, but, not gaining due credit with Pharaoh, the whole river was afterwards turned into blood, and then it became a plague. He is ordered to work this miracle in case they would not be convinced by the other two. Note, Unbelief shall be left inexcusable, and convicted of a wilful obstinacy. As to the people of Israel, God had said (Exo 3:18), They shall hearken; yet he appoints these miracles to be wrought for their conviction, for he that has ordained the end has ordained the means.

Moses still continues backward to the service for which God had designed him, even to a fault; for now we can no longer impute it to his humility and modesty, but must own that here was too much of cowardice, slothfulness, and unbelief in it. Observe here, I. How Moses endeavours to excuse himself from the work. 1. He pleads that he was no good spokesman: O my Lord! I am not eloquent, Exo 4:10. He was a great philosopher, statesman, and divine, and yet no orator; a man of a clear head, great thought, and solid judgment, but had not a voluble tongue, or ready utterance, and therefore he thought himself unfit to speak before great men about great affairs, and in danger of being run down by the Egyptians. Observe, (1.) We must not judge of men by the readiness and fluency of their discourse. Moses was mighty in word (Act 7:22), and yet not eloquent: what he said was strong and nervous, and to the purpose, and distilled as the dew (Deu 32:2), though he did not deliver himself with that readiness, ease, and elegance, that some do, who have not the tenth part of his sense. St. Paul's speech was contemptible, Co2 10:10. A great deal of wisdom and true worth is concealed by a slow tongue. (2.) God is pleased sometimes to make choice of those as his messengers who have fewest 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 Spirit made them such. 2. When this plea was overruled, and all his excuses were answered, he begged that God would send somebody else on this errand and leave him to keep sheep in Midian (Exo 4:13): "Send by any hand but mine; thou canst certainly find one much more fit." Note, An unwilling mind will take up with a sorry excuse rather than none, and is willing to devolve those services upon others that have any thing of difficulty or danger in them. II. How God condescends to answer all his excuses. Though the anger of the Lord was kindled against him (Exo 4:14), yet he continued to reason with him, till he had overcome him. Note, Even self-diffidence, when it grows into an extreme - when it either hinders us from duty or clogs us in duty, or when it discourages our dependence upon the grace of God - is very displeasing to him. God justly resents our backwardness to serve him, and has reason to take it ill; for he is such a benefactor as is before-hand with us, and such a rewarder as will not be behind-hand with us. Note further, God is justly displeased with those whom yet he does not reject: he vouchsafes to reason the case even with his froward children, and overcomes them, as he did Moses here, with grace and kindness. 1. To balance the weakness of Moses, he here reminds him of his own power, Exo 4:11. (1.) His power in that concerning which Moses made the objection: Who has made man's mouth? Have not I the Lord? Moses knew that God made man, but he must be reminded now that God made man's mouth. An eye to God as Creator would help us over a great many of the difficulties which lie in the way of our duty, Psa 124:8. God, as the author of nature, has given us the power and faculty of speaking; and from him, as the fountain of gifts and graces, comes the faculty of speaking well, the mouth and wisdom (Luk 21:15), the tongue of the learned (Isa 50:4); he pours grace into the lips, Psa 45:2. (2.) His power in general over the other faculties. Who but God makes the dumb and the deaf, the seeing and the blind? [1.] The perfections of our faculties are his work, he makes the seeing; he formed the eye (Psa 94:9); he opens the understanding, the eye of the mind, Luk 24:45. [2.] Their imperfections are from him too; he make the dumb, and deaf, and blind. Is there any evil of this kind, and the Lord has not done it? No doubt he has, and always in wisdom and righteousness, and for his own glory, Joh 9:3. Pharaoh and the Egyptians were made deaf and blind spiritually, as Isa 6:9, Isa 6:10. But God knew how to manage them, and get himself honour upon them. 2. To encourage him in this great undertaking, he repeats the promise of his presence, not only in general, I will be with thee (Isa 3:12), but in particular, "I will be with thy mouth, so that the imperfection in thy speech shall be no prejudice to thy message." It does not appear that God did immediately remove the infirmity, whatever it was; but he did that which was equivalent, he taught him what to say, and then let the matter recommend itself: if others spoke more gracefully, none spoke more powerfully. Note, Those whom God employs to speak for him ought to depend upon him for instructions, and it shall be given them what they shall speak, Mat 10:19. 3. He joins Aaron in commission with him. He promises that Aaron shall meet him opportunely, and that he will be glad to see him, they having not seen one another (it is likely) for many years, Exo 4:14. He directs him to make use of Aaron as his spokesman, Exo 4:16. God might have laid Moses wholly aside, for his backwardness to be employed; but he considered his frame, and ordered him an assistant. Observe, (1.) Two are better than one, Ecc 4:9. God will have his two witnesses (Rev 11:3), that out of their mouths every word may be established. (2.) Aaron was the brother of Moses, divine wisdom so ordering it, that their natural affection one to another might strengthen their union in the joint execution of their commission. Christ sent his disciples two and two, and some of the couples were brothers. (3.) Aaron was the elder brother, and yet he was willing to be employed under Moses in this affair, because God would have it so. (4.) Aaron could speak well, and yet was far inferior to Moses in wisdom. God dispenses his gifts variously to the children of men, that we may see our need one of another, and each may contribute something to the good of the body, Co1 12:21. The tongue of Aaron, with the head and heart of Moses, would make one completely fit for this embassy. (5.) God promises, I will be with thy mouth, and with his mouth. Even Aaron, that could speak well, yet could not speak to purpose unless God was with his mouth; without the constant aids of divine grace the best gifts will fail. 4. He bids him take the rod with him in his hand (Exo 4:17), to intimate that he must bring about his undertaking rather by acting than by speaking; the signs he should work with this rod might abundantly supply the want of eloquence; one miracle would do him better service than all the rhetoric in the world. Take this rod, the rod he carried as a shepherd, that he might not be ashamed of that mean condition out of which God called him. This rod must be his staff of authority, and must be to him instead both of sword and sceptre.