Exodus 4:3-5

Amplified Bible, Classic Edition

³ And He said, Cast it on the ground. And he did so and it became a serpent [the symbol of royal and divine power worn on the crown of the Pharaohs]; and Moses fled from before it.

⁴ And the Lord said to Moses, Put forth your hand and take it by the tail. And he stretched out his hand and caught it, and it became a rod in his hand,

⁵ [This you shall do, said the Lord] that the elders may believe that the Lord, the God of their fathers, of Abraham, of Isaac, and of Jacob, has indeed appeared to you.