The Women - 4:153
"The people of the Book ask you to send down to them a Book from the sky. They had asked Moses for something greater than that and said, "Show us Allah physically". They were struck by lightning because of their transgression. They served the calf even after clear proofs came to them. Again We forgave them, and We gave Moses a clear authority."
The clear authority given to Moses:
The Forgiver/40:23
We sent Moses with Our signs and a clear authority.
The Forgiver/40:24
"We said to Pharaoh, Haman and Karun. They said: "This is a magician and a liar"."
The Stories/28:34
Besides, my brother Aaron speaks better than me. Send him with me as a helper to support me. I fear that they will deny me.
The Stories/28:35
"He said, "We will strengthen your biceps with your brother and give you both such authority that they will not be able to touch you. You two and those who follow you will triumph by Our miracles."