(13) Send, I pray thee, by the hand of him whom thou wilt send.--Rather, pray send by whom thou wilt. A curt, impatient, and scarcely reverent speech. Moses means that he will undertake the task if God insists; but that God would do far better to send another. Hence the "anger of the Lord" against him (Exodus 4:14), which led to Aaron's association with him as joint leader of the people.

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 he said, O my Lord,.... Acknowledging his dominion, his sovereignty, his power to do the above things: or "on me, O Lord" (u), be the blame for making such objections; or on me let this work be devolved, since it is thy pleasure:

send, I pray thee, by the hand of him whom thou wilt send. Many of the ancient Christian fathers understand it of the Messiah that was to be sent, and as if Moses thought this was a fit time for the sending of him: and so Cocceius is of opinion, that nothing better can be understood, than that Moses desired that God would rather send him, whom Israel expected to be sent, even the Angel that should go before them; of whose mission see Exodus 23:20, but no particular person is intended, unless himself; and the common interpretation is, that God would send a more fit and proper person than he was; and that he would rather send anyone but him, and entreats to be excused; but I see not why this may not be understood of Moses assenting to his mission, and acquiescing in the will of God; as if he should say, since it must be so, the will of the Lord be done, let him send by whom he will, and since it is his pleasure to send by me, I submit; what may seem to contradict this is, the Lord's anger and resentment expressed in the following words; but that might be notwithstanding, since Moses had been so backward and reluctant, and made so many objections before he consented.

(u) "in me", Oleaster.