Requesting Proof
The People of the Book demand that you bring down a scripture from the heavens, yet they asked Moses for even greater signs, saying, “Show us Allah openly!” But they were struck down for their arrogance. Even after witnessing clear signs, they worshipped the calf, yet Allah forgave them and granted Moses undeniable authority.
4:153The people of the Scripture ask of thee that thou shouldst cause an (actual) Book to descend upon them from heaven. They asked a greater thing of Moses aforetime, for they said: Show us Allah plainly. The storm of lightning seized them for their wickedness. Then (even) after that) they chose the calf (for worship) after clear proofs (of Allah's Sovereignty) had come unto them. And We forgave them that! And We bestowed on Moses evident authority.