18 Then answered the Jews and said unto him, "What token showest thou unto us, seeing that thou dost these things?"
John 2:18 Cross References - MSTC
Matthew 12:38-42
38 Then answered certain of the scribes and of the Pharisees saying, "Master, we would fain see a sign of thee."
39 He answered them saying, "The evil and adulterous generation seeketh a sign; but there shall no sign be given to them, but the sign of the prophet Jonah:
40 For as Jonah was three days and three nights in the whale's belly; so shall the son of man be three days and three nights in the heart of the earth.
41 The men of Nineveh shall rise at the day of judgment with this nation, and condemn them: for they amended at the preaching of Jonah. And behold, a greater than Jonah is here.
42 The queen of the south shall rise at the day of judgment with this generation, and shall condemn them: for she came from the utmost parts of the world, to hear the wisdom of Solomon. And behold, a greater than Solomon is here.
Matthew 16:1-4
1 Then came to him the Pharisees with the Sadducees also, and did tempt him, desiring him to show them some sign from heaven.
2 He answered and said unto them, "At even ye say, 'We shall have fair weather,' and that because the sky is red:
3 And in the morning, ye say, 'Today shall be foul weather,' and that because the sky is cloudy and red. O ye hypocrites, ye can discern the fashion of the sky: and can ye not discern the signs of the times?
4 The forward nation, and adulterous, seeketh a sign: and there shall none other sign be given unto them, but the sign of the prophet Jonah." So left he them and departed.
Matthew 21:23
23 And when he was come into the temple, the chief priests and the elders of the people came unto him as he was teaching, and said, "By what authority doest thou these things? And who gave thee this power?"
Mark 8:11
11 And the Pharisees came forth, and began to dispute with him, seeking of him a sign from heaven and tempting him,
Mark 11:27-28
27 And they came again to Jerusalem. And as he walked in the temple, there came to him the high priests, and the scribes, and the elders,
28 and said unto him, "By what authority doest thou these things? And who gave thee this authority, to do these things?"
29 When the people were gathered thick together, he began to say, This is an evil nation. They seek a sign, and there shall no sign be given them, but the sign of Jonah the prophet.
Luke 20:1-2
1 And it fortuned, in one of those days, as he taught the people in the temple; and preached the gospel; the high priests and the scribes came unto him with the elders,
2 And spake unto him, saying, "Tell us by what authority thou doest these things? Either, who is he that gave thee this authority?"
John 1:25
25 And they asked him, and said unto him, "Why baptisest thou then, if thou be not Christ, nor Elijah, neither a prophet?"
John 6:30
30 They said unto him, "What sign showest thou, then, that we may see and believe thee? What dost thou work?
Acts 4:7
7 and set the other before them, and asked, "By what power, or in what name, have ye done this, sirs?"
Acts 5:28
28 saying, "Did not we straitly command you that ye should not teach in this name? And behold, ye have filled Jerusalem with your doctrine, and ye intend to bring this man's blood upon us."