Exodus 4:13 And he said, O my Lord, send, I pray thee, by the hand of him whom thou wilt send. 14 And the anger of the Lord was kindled against Moses, and he said, Is not Aaron the Levite thy brother? I know that he can speak well. And also, behold, he cometh forth to meet thee: and when he seeth thee, he will be glad in his heart.
[Patriarchs & Prophets pp 254] The Lord said unto him, “Who hath made man's mouth? or who maketh the dumb, or deaf, or the seeing, or the blind? have not I the Lord?” To this was added another assurance of divine aid: “Now therefore go, and I will be with thy mouth, and teach thee what thou shalt say.” But Moses still entreated that a more competent person be selected. These excuses at first proceeded from humility and diffidence.
But after the Lord had promised to remove all difficulties, and to give him final success, then any further shrinking back and complaining of his unfitness showed distrust of God. It implied a fear that God was unable to qualify him for the great work to which He had called him, or that He had made a mistake in the selection of the man. Moses was now directed to Aaron, his elder brother, who, having been in daily use of the language of the Egyptians, was able to speak it perfectly. He was told that Aaron was coming to meet him. The next words from the Lord were an unqualified command:
“Thou shalt speak unto him, and put words in his mouth: and I will be with thy mouth, and with his mouth, and will teach you what ye shall do. And he shall be thy spokesman unto the people: and he shall be, even he shall be to thee instead of a mouth, and thou shalt be to him instead of God. And thou shalt take this rod in thine hand, wherewith thou shalt do signs.” He could make no further resistance, for all ground for excuse was removed.
Exodus 4:19 And the Lord said unto Moses in Midian, Go, return into Egypt: for all the men are dead which sought thy life.
May The Lord add His blessing to the study of His word. God bless!