LXX Num 19:20

καὶ ἄνθρωπος ὃς ἐὰν μιανθῇ καὶ μὴ ἀφαγνισθῇ, ἐξολεθρευθήσεται ἡ ψυχὴ ἐκείνη ἐκ μέσου τῆς συναγωγῆς, ὅτι τὰ ἅρα Κυρίου ἐμίανεν· ὅτι ὕδωρ ῥαντισμοῦ οὐ περιεραντίσθη ἐπ’ αὐτόν, ἀκάθαρτός ἐστιν.

But if a person who is unclean does not purify himself, he will be cut off from the assembly, because he has defiled the sanctuary of the LORD. The water of purification has not been sprinkled on him; he is unclean.