Parallel
Mark 9:10
Robinson-Pierpont Byzantine Textform · Berean Standard Bible
Καὶ τὸν λόγον ἐκράτησαν πρὸς ἑαυτούς, συζητοῦντες τί ἐστιν τὸ ἐκ νεκρῶν ἀναστῆναι.
So they kept this matter to themselves, discussing what it meant to rise from the dead.