Exodus 4:1-5
Then Moses answered, “But behold, they will not believe me or listen to my voice, for they will say, ‘The Lord did not appear to you.’” The Lord said to him, “What is that in your hand?” He said, “A staff.” And he said, “Throw it on the ground.” So he threw it on the ground, and it became a serpent, and Moses ran from it. But the Lord said to Moses, “Put out your hand and catch it by the tail”—so he put out his hand and caught it, and it became a staff in his hand— “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.”
Exodus 5:1-2
Afterward Moses and Aaron went and said to Pharaoh, “Thus says the Lord, the God of Israel, ‘Let my people go, that they may hold a feast to me in the wilderness.’” But Pharaoh said, “Who is the Lord, that I should obey his voice and let Israel go? I do not know the Lord, and moreover, I will not let Israel go.”
Exodus 7:1-5,9,20,25
And the Lord said to Moses, “See, I have made you like God to Pharaoh, and your brother Aaron shall be your prophet. You shall speak all that I command you, and your brother Aaron shall tell Pharaoh to let the people of Israel go out of his land. But I will harden Pharaoh’s heart, and though I multiply my signs and wonders in the land of Egypt, Pharaoh will not listen to you. Then I will lay my hand on Egypt and bring my hosts, my people the children of Israel, out of the land of Egypt by great acts of judgment. The Egyptians shall know that I am the Lord, when I stretch out my hand against Egypt and bring out the people of Israel from among them.” “When Pharaoh says to you, ‘Prove yourselves by working a miracle,’ then you shall say to Aaron, ‘Take your staff and cast it down before Pharaoh, that it may become a serpent.’” Moses and Aaron did as the Lord commanded. In the sight of Pharaoh and in the sight of his servants he lifted up the staff and struck the water in the Nile, and all the water in the Nile turned into blood. Seven full days passed after the Lord had struck the Nile.
I could go on.
Moses staff/rod is a rod of judgment. When God has Moses use the staff, a judgment comes to Egypt at the Red Sea. The people of Israel knew that Moses "passing by the people" was an expected judgment. Yet, instead of the judgment falling on Israel, it fell on the Rock.
Paul fills in the rest in 1 Corinthians 10.
Jon,you need to embrace what God presents.