Exodus 4:10

10.O my Lord. Moses catches at every word of escape, so as to force himself from the task imposed on him, not that he desires to refuse the command, but because he trembles at its importance. It is this distrust of his own powers which makes him so hesitating and timid. The remedy was obvious, that he should assure himself, since he well knew that he was undertaking nothing rashly, that God, whose command he obeyed, would supply him with ample strength. In this, then, lay the fault, that he did not cast all his cares on God, and, setting aside his own weakness, hope against hope, like Abraham, who

“considered not his own body now dead; neither yet the deadness of Sarah’s womb; being fully persuaded that what God had promised, he was able also to perform.” (Romans 4:18.)

It was an act of modesty in him to reflect on the defect which he mentioned, if he had but asked for succor from God; but when he proceeds further, and requests to be altogether discharged, he does an injustice to God, as if He would lay a greater burden on His servants than they could bear, or would give any inconsiderate command. This over-anxious caution is, therefore, deservedly condemned, although it may have some admixture of virtue; because whatever difficulty we encounter, this ought to be a sufficient encouragement to us, that as often as God chooses men as His ministers, although they are in themselves good for nothing, He forms and prepares them for their work. It is, indeed, lawful to fear in perplexities, provided that our anxiety overcomes not the desire to obey; but whatever God enjoins it is never right to refuse on any pretext. Moreover, we see that the instruments which seem but little suitable are especially employed by Him, in order that His power may more fully appear. He might, if He had chosen to use Moses as His ambassador, have made him eloquent from the womb; or, at least, when He sends him to his work, have corrected his stammering tongue. It seems a mockery, then, to give a commission of speaking to a stammerer; but in this way, (as I have said,) He causes His glory to shine forth more brightly, proving that He can do all things without extrinsic aid. Interpreters vary as to the meaning of the words. Some think that the clause “since thou hast spoken to thy servant” is added in amplification, as if the tongue of Moses began to be more slow than ever since the vision had appeared; but since the particle גם, (52) gam, is thrice repeated, I interpret it simply, that Moses had never been eloquent from his infancy, and that he was not now endued with any new eloquence.