A rod - The word seems to denote the long staff which on Egyptian monuments is borne by men in positions of authority. It was usually made of acacia wood.

A rod - מתה matteh, a staff, probably his shepherd's crook; see Leviticus 27:32. As it was made the instrument of working many miracles, it was afterwards called the rod of God; see Exodus 4:20.

And the Lord said unto him,.... Not reproving him for contradicting him, or showing any diffidence of what he had said; but rather as approving the hint he gave of having some sign or miracle wrought, to command from the Israelites an assent unto him, as commissioned of God to deliver them:

what is that in thine hand? which question is put, not as being ignorant of what it was, but to lead on to what he had further to say, and to the working of the miracle:

and he said, a rod; or staff, such as shepherds use in the management of their flocks, for Moses was now feeding the flock of his father-in-law; but Aben Ezra seems rather to think it was a walking staff, such as ancient men lean upon, since Moses did not go to Pharaoh after the manner of a shepherd; yea, it may be added, he went with the authority of a prince or ruler of Israel, and even with the authority of the ambassador of the King of kings.

The First Sign. - The turning of Moses' staff into a serpent, which became a staff again when Moses took it by the tail, had reference to the calling of Moses. The staff in his hand was his shepherd's crook (מזּה Exodus 4:2, for מה־זה, in this place alone), and represented his calling as a shepherd. At the bidding of God he threw it upon the ground, and the staff became a serpent, before which Moses fled. The giving up of his shepherd-life would expose him to dangers, from which he would desire to escape. At the same time, there was more implied in the figure of a serpent than danger which merely threatened his life. The serpent had been the constant enemy of the seed of the woman (Genesis 3), and represented the power of the wicked one which prevailed in Egypt. The explanation in Pirke Elieser, c. 40, points to this: ideo Deum hoc signum Mosi ostendisse, quia sicut serpens mordet et morte afficit homines, ita quoque Pharao et Aegyptii mordebant et necabant Israelitas. But at the bidding of God, Moses seized the serpent by the tail, and received his staff again as "the rod of God," with which he smote Egypt with great plagues. From this sign the people of Israel would necessarily perceive, that Jehovah had not only called Moses to be the leader of Israel, but had endowed him with the power to overcome the serpent-like cunning and the might of Egypt; in other words, they would "believe that Jehovah, the God of the fathers, had appeared to him." (On the special meaning of this sign for Pharaoh, see Exodus 7:10.)

And the LORD said unto him, What is that in thine hand? And he said, A rod.

4:2 A rod - Or staff.

Margin rod

Sign of the rod = power Ps 110:2 2:9 Rev 2:27. It was Moses' shepherd's crook, the tool of his calling. Cast down, it became a serpent; taken up in faith, it became "the rod of God" Ex 4:20 7:12. See Scofield Note: "Ex 7:12"

2. the Lord said, . What is that in thine hand?-The question was put not to elicit information which God required, but to draw the particular attention of Moses.

A rod-probably the shepherd's crook-among the Arabs, a long staff, with a curved head, varying from three to six feet in length.

4:1-9 Moses objects, that the people would not take his word, unless he showed them some sign. God gives him power to work miracles. But those who are now employed to deliver God's messages to men, need not the power to work miracles: their character and their doctrines are to be tried by that word of God to which they appeal. These miracles especially referred to the miracles of the Lord Jesus Christ. It belonged to Him only, to cast the power of the devil out of the soul, and to heal the soul of the leprosy of sin; and so it was for Him first to cast the devil out of the body, and to heal the leprosy of the body.