The people of the Book are asking you to bring down you a Book for them from the sky, surely they have asked Moses greater than that; they asked him: "You show us, Lord Allah, openly". Then a thunderbolt seized them due to their injustice; after that, they have selected a calf even after explanations had come to them, then We again pardoned them, and We gave Moses a Manifest Authority.
Moses was given miraculous Signs such as his staff transforms into a snake and hands glows after placing under his armpit. Verses 7: 130 and 7: 133 explain the other Signs Lord has shown to the people of Pharaoh through Moses. Then Lord has saved the Children of Israel from Pharaoh and his men by inspiring Moses to strike the Sea with his staff, then it is divided, and each portion became like a great towering mountain as told in verse 26: 63. And a dry path was formed in between the towers of seawater through which the Children of Isreal could cross the sea safely as told in verse 20: 77. Then when Pharoah and his army followed the Children of Israel out of insolence and enmity, they were drowned by joining the two parts of seawater as explained in verses 10: 90. Then upon reaching the desert Sinai, they were given shades with clouds, provided heavenly food, and drinking water from the rock upon beating by Moses' staff. Even by witnessing all these Manifest Signs, they tried to mold a calf for worshiping under the leadership of Samiriyy when Moses went to Mount Sinai for receiving the Torah. That too was forgiven by Lord. Then even after receiving Torah, they demanded Moses to show them, Lord Allah, openly. Thus when Moses and seventy men from his people went to Mount Sinai for seeing Lord openly, Lord seized them with violent trembling and forgave them as explained in verse 7: 155. The Manifest Authorities given to Moses includes the supernatural Signs, Torah, and Its Explanations.
The Jews in Medina were demanding Messenger Muhammad to reveal a Book for them from the sky. Meccan pagans were also demanding Messenger Muhammad to reveal a Book for them openly from the sky as mentioned in verses 17: 93-95. They also asked Messenger: “Why aren’t the Angels sent down upon us or why we can’t see our Lord openly?” as told in verse 25: 21.
But today the Arabic Quran reading Fujjar who read these verses are hiding and rejecting Adhikr which is the Best Interpretation of Lord's Book. The Fujjar are having never-ending doubts concerning every matter. The Fujjar will wail on the Day of Judgment by biting their hands as "Oh woe to me! If I hadn't selected so-and-so as my intimate friend, indeed he has strayed me from Adhikr after It had come to me; nay, Satan was a manifest traitor to mankind" as explained in verses 25: 27-29. And Messenger Muhammad will witness against the Fujjar as: "Indeed these people of mine had migrated away from this Reading" as told in verse 25: 30.
Authority is one of the forty names of Adhikr which is mentioned in 27 places such as in verses 6: 81; 17: 80 and 55: 33. See explanation2: 54-57, 210-211, and 3: 183.