Exodus 19:10

¹⁰ εἶπεν δὲ κύριος πρὸς μωυσῆν καταβὰς διαμάρτυραι τῷ λαῷ καὶ ἅγνισον αὐτοὺς σήμερον καὶ αὔριον καὶ πλυνάτωσαν τὰ ἱμάτια