What.

John 6:30
So they asked Him, "What sign then will You perform, so that we may see it and believe You? What will You do?

Matthew 12:38
Then some of the scribes and Pharisees said to Him, "Teacher, we want to see a sign from You."

Matthew 16:1-4
Then the Pharisees and Sadducees came and tested Jesus by asking Him to show them a sign from heaven. . . .

Mark 8:11
Then the Pharisees came and began to argue with Jesus. They tested Him by demanding from Him a sign from heaven.

Luke 11:29
As the crowds were increasing, Jesus said, "This is a wicked generation. It demands a sign, but none will be given it except the sign of Jonah.

seeing.

John 1:25
asked him, "Why then do you baptize, if you are not the Christ, nor Elijah, nor the Prophet?"

Matthew 21:23
When Jesus returned to the temple courts and began to teach, the chief priests and elders of the people came to Him. "By what authority are You doing these things?" they asked. "And who gave You this authority?"

Mark 11:27, 28
After their return to Jerusalem, Jesus was walking in the temple courts, and the chief priests, scribes, and elders came up to Him. . . .

Luke 20:1, 2
One day as Jesus was teaching the people in the temple courts and proclaiming the gospel, the chief priests and scribes, together with the elders, came up to Him. . . .

Acts 4:7
They had Peter and John brought in and began to question them: "By what power or what name did you do this?"

Acts 5:28
"We gave you strict orders not to teach in this name, " he said. "Yet you have filled Jerusalem with your teaching and are determined to make us responsible for this man's blood."