- Exodus 4:10-15
Then Moses said to the LORD, "O my Lord, I am not eloquent, neither before nor since You have spoken to Your servant; but I am slow of speech and slow of tongue." So the LORD said to him, "Who has made man's mouth? Or who makes the mute, the deaf, the seeing, or the blind? Have not I, the LORD? Now therefore, go, and I will be with your mouth and teach you what you shall say." But he said, "O my Lord, please send by the hand of whomever else You may send." So the anger of the LORD was kindled against Moses, and He said: "Is not Aaron the Levite your brother? I know that he can speak well. And look, he is also coming out to meet you. When he sees you, he will be glad in his heart. Now you shall speak to him and put the words in his mouth. And I will be with your mouth and with his mouth, and I will teach you what you shall do.
- Numbers 20:8-13
“Take the rod; you and your brother Aaron gather the congregation together. Speak to the rock before their eyes, and it will yield its water; thus you shall bring water for them out of the rock, and give drink to the congregation and their animals.” So Moses took the rod from before the LORD as He commanded him. And Moses and Aaron gathered the assembly together before the rock; and he said to them, “Hear now, you rebels! Must we bring water for you out of this rock?” Then Moses lifted his hand and struck the rock twice with his rod; and water came out abundantly, and the congregation and their animals drank. Then the LORD spoke to Moses and Aaron, 'Because you did not believe Me, to hallow Me in the eyes of the children of Israel, therefore you shall not bring this assembly into the land which I have given them.' This was the water of Meribah, because the children of Israel contended with the LORD, and He was hallowed among them.
