John 2:18
So the Jews asked Him, "What proof of your authority do you exhibit to us, seeing that you do these things?"
John 6:30
"What miracle then," they asked, "do you perform for us to see and become believers in you? What do you *do*?
Matthew 12:38-42
Then He was accosted by some of the Scribes and of the Pharisees who said, "Teacher, we wish to see a sign given by you."
Matthew 16:1-4
Here the Pharisees and Sadducees came to Him; and, to make trial of Him, they asked Him to show them a sign in the sky.
Matthew 21:23
He entered the Temple; and while He was teaching, the High Priests and the Elders of the people came to Him and asked Him, "By what authority are you doing these things? and who gave you this authority?"
Mark 8:11
The Pharisees followed Him and began to dispute with Him, asking Him for a sign in the sky, to make trial of Him.
Mark 11:27-28
They came again to Jerusalem; and as He was walking in the Temple, the High Priests, Scribes and Elders came to Him
Luke 11:29
Now when the crowds came thronging upon Him, He proceeded to say, "The present generation is a wicked generation: it requires some sign, but no sign shall be given to it except that of Jonah.
Luke 20:1-2
On one of those days while He was teaching the people in the Temple and proclaiming the Good News, the High Priests came upon Him, and the Scribes,
John 1:25
Again they questioned him. "Why then do you baptize," they said, "if you are neither the Christ nor Elijah nor the Prophet?"
Acts 4:7
So they made the Apostles stand in the centre, and demanded of them, "By what power or in what name have you done this?"
Acts 5:28
"We strictly forbad you to teach in that name--did we not?" he said. "And see, you have filled Jerusalem with your teaching, and are trying to make us responsible for that man's death!"