And the Lord spake unto Moses. Moses more clearly sets forth how indulgently God bore with the malevolent repulse of the people; the just reward of which would have been, that He should have suffered them to rot a hundred times over in their miseries, when they so obstinately rushed to their own destruction. It is, therefore, of His extraordinary loving-kindness, that He ceases not to aid those who are willing to perish. Moreover, it must be observed, that Moses was strengthened by this new command, since he had been himself shaken by the despair of the people. But; it was no trifling sin to be so hardened and stupified by misfortune, as to reject the remedy proposed to them. He might then reasonably conjecture, that he was to proceed no further, lest he should be foolishly exposing himself to so many anxieties at his own great peril, and with no profitable result. But God meets this temptation, and commands him, nevertheless, to contend perseveringly with the obstinacy of Pharaoh. But the answer of Moses shews, that this legation had been again enjoined upon the holy man, since the time that the anguish of the people had closed the way of God's grace. For when at first the people were aroused by the first message to a cheerful hope of deliverance, this happy commencement had encouraged Moses to extraordinary energy for the performance of his task; and this might naturally fail him upon the unprosperous event which had now taken place, until he had been animated anew to perseverance. He therefore asks to be dismissed, lest his labor should be in vain, and reasons from the less to the greater, since it would be much more difficult to influence the mind of Pharaoh to give up his claims against his will, than to persuade the afflicted (people) to receive the aid proffered to them from on high. But he had now learnt from experience, that the people's hearts were as a door closed against God; why then should he try to move the exceeding great rock from its place? Although it was not his design to shake off the burden of the vocation imposed upon him, yet he would have willingly withdrawn himself indirectly, and turned his back upon it. Thus we sometimes see the heartiest of God's servants beginning to faint in the midst of their course, especially when they encounter difficulties, and stumble upon some path which is worse than they expected. Wherefore we must the more earnestly entreat of God, that amidst the various trials against which we have to struggle, He may never deprive us of the assistance of His power, but rather continually inspire us with new strength in proportion to the violence of our contests. But what hope of the deliverance now survived, the minister of which was so down-hearted and depressed, and which the people themselves had so openly despised, if God had not accomplished all things by Himself? Nor is there any doubt that He wished to shew, by this failure on the part of men, that His own hand was sufficient for Him. That Moses should call himself "of uncircumcised lips," I refer to his stammering, which he had before alleged as an obstacle; although, if any prefer to understand it otherwise, I make no strong objection.

And the Lord spake unto Moses,.... At another time, and renewed his orders to him to go again to Pharaoh, and require their dismission:
saying; as follows:

The faith of Moses was so feeble that he could scarcely be kept to his work. Ready obedience is always according to the strength of our faith. Though our weaknesses ought to humble us, yet they ought not to discourage us from doing our best in any service we have to do for God. When Moses repeats his baffled arguments, he is argued with no longer, but God gives him and Aaron a charge, both to the children of Israel, and to Pharaoh. God's authority is sufficient to answer all objections, and binds all to obey, without murmuring or disputing, Philippians 2:14.