Matthew 16:4

4A generationΓενεὰevilπονηρὰandκαὶadulterousμοιχαλὶςa signσημεῖονseeksἐπιζητεῖ,andκαὶa signσημεῖονnotοὐwill be givenδοθήσεταιto itαὐτῇifεἰnotμὴtheτὸsignσημεῖονof JonahἸωνᾶ.Andκαὶhaving leftκαταλιπὼνthemαὐτοὺςHe went awayἀπῆλθεν.

[An] evil and adulterous generation seeks after a sign, and a sign will not be given to it except the sign of Jonah.” And having left them, He went away.