Parallel
Luke 11:30
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Καθὼς γὰρ ἐγένετο Ἰωνᾶς σημεῖον τοῖς Νινευΐταις, 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.