Say unto Aaron, Take thy rod — This Moses ordinarily held in his hand, and delivered it to Aaron upon occasion, for the execution of his commands.
Related Commentaries of Exodus 7:9
Exodus 7:9
9 When Pharaoh shall speak unto you, saying, Shew a miracle for you: then thou shalt say unto Aaron, Take thy rod, and cast it before Pharaoh, and it shall become a serpent.