18 Then the Jews said to him, "What sign do you show to us, since you do this?"
John 2:18 Cross References - Common
Matthew 12:38-42
38 Then some of the scribes and Pharisees said to him, "Teacher, we want to see a sign from you."
39 But he answered them, "An evil and adulterous generation seeks for a sign; but no sign will be given to it except the sign of the prophet Jonah.
40 For as Jonah was three days and three nights in the belly of the great fish, so the Son of Man will be three days and three nights in the heart of the earth.
41 The men of Nineveh will stand up at the judgment with this generation and condemn it; for they repented at the preaching of Jonah, and now one greater than Jonah is here.
42 The queen of the South will rise at the judgment with this generation and condemn it; for she came from the ends of the earth to hear the wisdom of Solomon, and behold, something greater than Solomon is here.
Matthew 16:1-4
1 Then the Pharisees and Sadducees came, and to test him they asked him to show them a sign from heaven.
2 He answered them, "When it is evening, you say, 'It will be fair weather; for the sky is red.'
3 And in the morning, 'It will be stormy today, for the sky is red and threatening.' You know how to interpret the appearance of the sky, but you cannot interpret the signs of the times.
4 A wicked and adulterous generation seeks for a sign, but no sign shall be given to it except the sign of Jonah." So he left them and departed.
Matthew 21:23
23 And when he entered the temple, the chief priests and the elders of the people came up to him as he was teaching, and said, "By what authority are you doing these things, and who gave you this authority?"
Mark 8:11
11 The Pharisees came and began to argue with him, seeking from him a sign from heaven, to test him.
Mark 11:27-28
27 Then they came again to Jerusalem. And as he was walking in the temple, the chief priests, the scribes, and the elders came to him.
28 And they said to him, "By what authority are you doing these things? Who gave you this authority to do them?"
29 When the crowds were increasing, he began to say, "This is an evil generation. It seeks a sign, but no sign will be given to it except the sign of Jonah.
Luke 20:1-2
John 1:25
25 They asked him, "Then why do you baptize, if you are not the Christ, nor Elijah, nor the prophet?"
John 6:30
30 So they said to him, "What sign will you perform then, that we may see it and believe you? What work will you do?
Acts 4:7
7 And when they had set them in the midst, they began to inquire, "By what power or by what name did you do this?"
Acts 5:28
28 saying, "We gave you strict orders not to teach in this name, and yet, you have filled Jerusalem with your teaching and intend to bring this man's blood upon us."