Luke 11:30

30AsκαθὼςforγὰρwasἐγένετοJonahἸωνᾶςto theτοῖςNinevitesΝινευίταιςa signσημεῖον,thusοὕτωςwill beἔσταιalsoκαὶtheὁSonυἱὸςτοῦof Manἀνθρώπουto theτῇgenerationγενεᾷthisταύτῃ.

For just as Jonah was a sign to the Ninevites, so also the Son of Man will be to this generation.