“And Moses said unto the LORD, O my Lord, I am not eloquent, neither heretofore, nor since thou hast spoken unto thy servant: but I am slow of speech, and of a slow tongue. And 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? Now therefore go, and I will be with thy mouth, and teach thee what thou shalt say.” -Exodus 4:10-12
Here we see a reluctance of Moses, on account of his lack of natural ability. God had chosen him as a spokesman, and he felt inadequate because he was evidently a poor speaker.
And so, God allowed Moses’ brother Aaron to be the spokesman, while all of the miracles and wonders were still done through Moses. And throughout the book of Exodus, we may safely assume that every time it says that “Moses spoke unto” so-and-so, that it was actually Aaron doing the speaking, with Moses hearing the words from God, and communicating them to Aaron.
Yet a funny thing happened in the midst of Moses’ ministry among the Israelites: though he was initially very timid and not confident in his natural abilities, he eventually grew into the role that God had for him, and by the end of his life, Moses appeared to be every bit as talented a speaker as his brother Aaron.
Consider this happening among Moses’ lifetime: his brother Aaron—his faithful spokesman—died in the wilderness. “And Aaron the priest went up into mount Hor at the commandment of the LORD, and died there, in the fortieth year after the children of Israel were come out of the land of Egypt, in the first day of the fifth month” (Numbers 33:38).
Following this, Moses was well able to give quite a lengthy and perhaps skillful oration to all the nation of Israel; for it appears that virtually the entire book of Deuteronomy is simply a big speech that Moses delivered to his people before he died, as they were about to cross over the Jordan into the promised land. “And Moses went and spake these words unto all Israel” (Deuteronomy 31:1).
God enables those whom He calls
So we see in this situation, that even though Moses doubted his own abilities—and to an extent, even God’s providential care to enable him to speak—he became competent to do God’s will as he walked in it, and was empowered as he followed and obeyed God.
And what if Moses had refused to lead God’s people out of Egypt? Would he have been given this ability to speak as he did? I believe he would’ve been just as poor a speaker as the day that God called him—the transformation, and the providence of God, is only seen in obedience. We are only benefited from God’s gifts as we follow the command to “go.” If we stay where we are, we neither walk in God’s will, nor are changed and empowered to perform His bidding.
“For who is God save the LORD? or who is a rock save our God? It is God that girdeth me with strength, and maketh my way perfect. He maketh my feet like hinds’ feet, and setteth me upon my high places. He teacheth my hands to war, so that a bow of steel is broken by mine arms. Thou hast also given me the shield of thy salvation: and thy right hand hath holden me up, and thy gentleness hath made me great.” -Psalm 18:31-35