Exodus 4:2-9

2So the Lord said to him, “What is that in your hand?” He said, “A rod.”

3And He said, “Cast it on the ground.” So he cast it on the ground, and it became a serpent; and Moses fled from it.

4Then the Lord said to Moses, “Reach out your hand and take it by the tail” (and he reached out his hand and caught it, and it became a rod in his hand),

5“that they may believe that the Lord God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has appeared to you.”

6Furthermore the Lord said to him, “Now put your hand in your bosom.” And he put his hand in his bosom, and when he took it out, behold, his hand was leprous, like snow.

7And He said, “Put your hand in your bosom again.” So he put his hand in his bosom again, and drew it out of his bosom, and behold, it was restored like his other flesh.

8“Then it will be, if they do not believe you, nor heed the message of the first sign, that they may believe the message of the latter sign.

9And it shall be, if they do not believe even these two signs, or listen to your voice, that you shall take water from the river and pour it on the dry land. The water which you take from the river will become blood on the dry land.”