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.
God does not put Aaron in Moses's place but divides the offices mercifully: Moses holds authority, Aaron interprets. Moses dictates what Aaron faithfully reports and obediently follows. By this we learn that the Spirit's gifts and our callings are distributed by God's free bounty alone, not by our desert or desire.
AI summary
Moses persists in backward steps, and we cannot now call it humility but must own cowardice, slothfulness, and unbelief. He was a great mind but no orator, and thought himself unfit for great affairs; yet God often chooses those with fewest natural advantages, that His grace may shine the brighter. An unwilling mind will seize any sorry excuse rather than obey.
AI summary
Commenting on Exodus 4:10-17
Aaron becomes Moses's mouth, a plain speaker who explains his sense in clear language to the people. Moses stands between God and Aaron, receiving orders from the Lord and transmitting them as a teacher and magistrate would. The elder brother becomes subject to the younger because God ordains it so.
AI summary