C. F. Keil and Franz Delitzsch on Exodus 4:11-12

Exo 4:11-12

Jehovah both could and would provide for this defect. He had made man’s mouth, and He made dumb or deaf, seeing or blind. He possessed unlimited power over all the senses, could give them or take them away; and He would be with Moses’ mouth, and teach him what he was to say, i.e., impart to him the necessary qualification both as to matter and mode. - Moses’ difficulties were now all exhausted, and removed by the assurances of God. But this only brought to light the secret reason in his heart. He did not wish to undertake the divine mission.