And the Lord said to him, What is this thing that is in your hand? And he said, A rod.

Now if Pharaoh should speak to you, saying, Give us a sign or a wonder, then shall you say to your brother Aaron, Take your rod and cast it upon the ground before Pharaoh, and before his servants, and it shall become a serpent.

And the Lord said to Moses, Say to your brother Aaron, Take your rod in your hand, and stretch forth your hand over the waters of Egypt, and over their rivers, and over their canals, and over their ponds, and over all their standing water, and it shall become blood. And there was blood in all the land of Egypt, both in vessels of wood and of stone.

But God chose the foolish things of the world in order that He might humiliate the wise, and God chose the weak things of the world in order that He might humiliate the mighty.