God begins not with what Moses lacked but with what was already in his hand. The rod was the shepherd's tool — eight feet of wood, his job description for forty years.

God still does this. He uses what is in your hand. The skills you have been quietly developing in obscurity, the tools you have been using for ordinary work — these become the instruments of His extraordinary purposes.

Moses' final excuse. He has been argued out of his fear of credibility (verses 1-9). Now he objects on the basis of ability. Stephen says Moses was mighty in words and in deeds (Acts 7:22) — but Moses did not feel it.

The man who feels qualified for ministry is often the dangerous one. The man who feels unqualified is often the one God is preparing. The discrepancy between God's estimate and the servant's estimate is a recurring pattern.

God's answer to Moses' inadequacy is the doctrine of God's sovereignty over creation. The same God who made the mouth can use the mouth He made.

A startling implication. Who maketh the dumb, or deaf, or the seeing, or the blind? God claims authorship even of disabilities. Not the source of evil in them, but the sovereign One who allows or appoints them for His purposes. John 9:3 echoes this.

The promise to every preacher. I will be with thy mouth, and teach thee what thou shalt say. God does not call without enabling.

Jesus quoted this principle in Matthew 10:19-20 to His disciples — take no thought how or what ye shall speak: for it shall be given you in that same hour what ye shall speak. For it is not ye that speak, but the Spirit of your Father which speaketh in you. The Exodus 4 promise extended.

God provides Aaron as a concession to Moses' unbelief. Aaron would become a long source of trouble (the golden calf, the rebellion against Moses) — a permanent reminder that what we get by unbelief stays with us.

God's second-best, granted to a stubborn servant, is still real and still grace. But the believer who refused His first-best by faith carries the cost.

One of the strangest verses in the Bible. The Lord seeks to kill the very man He has just commissioned. The reason becomes clear in the next verses — Moses had not circumcised his son, violating the covenant sign.

A man cannot lead God's people while disobeying God's covenant in his own house. Moses cannot demand Pharaoh release God's sons while withholding the covenant mark from his own son. Personal obedience precedes public ministry.

Zipporah acts decisively. Moses had hesitated; she did not. The circumcision was probably resisted because Zipporah's Midianite culture disliked the practice — but Moses had let his wife's preference override God's command.

A wife's strong preferences can become a husband's spiritual liability. Moses had to choose — and circumcision was applied at the last hour to save his life. Some obediences cannot be postponed any longer.