Parallel
Numbers 20:29
Swete's Septuagint · Berean Standard Bible
καὶ εἶδεν πᾶσα ἡ συναγωγὴ ὅτι ἀπελύθη Ἀαρών. καὶ ἔκλαυσαν τὸν Ἀαρὼν τριάκοντα ἡμέρας πᾶς οἶκος Ἰσραήλ.
When the whole congregation saw that Aaron had died, the entire house of Israel mourned for him thirty days.