LXX Num 11:16

εἶπεν κύριος πρὸς Μωυσῆν Συνάγαγέ μοι ἄνδρας ἀπὸ τῶν πρεσβυτέρων Ἰσραὴλ, οὓς αὐτός σοι εἶδες ὅτι οὗτοί εἰσιν πρεσβύτεροι τοῦ λαοῦ καὶ γραμματεῖς αὐτῶν. καὶ ἄξεις αὐτοὺς πρὸς τὴν σκηνὴν τοῦ μαρτυρίου, καὶ στήσονται ἐκεῖ μετὰ σοῦ.

Then the LORD said to Moses, “Bring Me seventy of the elders of Israel known to you as leaders and officers of the people. Bring them to the Tent of Meeting and have them stand there with you.