Exodus 4:2-9

4:2 The Lord said to him, “What is that in your hand?” He said, “A staff.” 4:3 The Lord said, “Throw it to the ground.” So he threw it to the ground, and it became a snake, and Moses ran from it. 4:4 But the Lord said to Moses, “Put out your hand and grab it by the tail” – so he put out his hand and caught it, and it became a staff in his hand – 4:5 “that they may believe that the Lord, the God of their fathers, the God of Abraham, the God of Isaac, and the God of Jacob, has appeared to you.”

4:6 The Lord also said to him, “Put your hand into your robe.” So he put his hand into his robe, and when he brought it out – there was his hand, leprous like snow! 4:7 He said, “Put your hand back into your robe.” So he put his hand back into his robe, and when he brought it out from his robe – there it was, restored like the rest of his skin! 4:8 “If they do not believe you or pay attention to the former sign, then they may believe the latter sign. 4:9 And if they do not believe even these two signs or listen to you, then take some water from the Nile and pour it out on the dry ground. The water you take out of the Nile will become blood on the dry ground.”