Matthew 12:38

²²For Jews ask for signs, Greeks seek after wisdom,

¹¹The Pharisees came out and began to question him, seeking from him a sign from heaven and testing him. ¹²He sighed deeply in his spirit and said, “Why does this generation^[+] seek a sign? Most certainly I tell you, no sign will be given to this generation.”

¹⁸The Jews therefore answered him, “What sign do you show us, seeing that you do these things?”

¹⁶Others, testing him, sought from him a sign from heaven.

⁴⁸Jesus therefore said to him, “Unless you see signs and wonders, you will in no way believe.”

²⁹When the multitudes were gathering together to him, he began to say, “This is an evil generation. It seeks after a sign. No sign will be given to it but the sign of Jonah the prophet.

¹The Pharisees and Sadducees came, and testing him, asked him to show them a sign from heaven. ²But he answered them, “When it is evening, you say, ‘It will be fair weather, for the sky is red.’ ³In the morning, ‘It will be foul weather today, for the sky is red and threatening.’ Hypocrites! You know how to discern the appearance of the sky, but you can’t discern the signs of the times! ⁴An evil and adulterous generation seeks after a sign, and there will be no sign given to it, except the sign of the prophet Jonah.” He left them and departed.

³⁰They said therefore to him, “What then do you do for a sign, that we may see and believe you? What work do you do?