Parallel
Luke 11:30
Nestle 1904 Greek New Testament · Berean Standard Bible
καθὼς γὰρ ἐγένετο Ἰωνᾶς τοῖς Νινευίταις σημεῖον οὕτως ἔσται καὶ ὁ Υἱὸς τοῦ ἀνθρώπου τῇ γενεᾷ ταύτῃ
For as Jonah was a sign to the Ninevites, so the Son of Man will be a sign to this generation.