LXX Deut 2:14

καὶ αἱ ἡμέραι ἃς παρεπορεύθημεν ἀπὸ Καδὴς Βαρνὴ ἕως οὗ παρήλθομεν τὴν φάραγγα Ζάρετ τριάκοντα καὶ ὀκτὼ ἔτη, ἕως οὗ διέπεσεν πᾶσα γενεὰ ἀνδρῶν πολεμιστῶν ἀποθνήσκοντες ἐκ τῆς βολῆς, καθότι ὤμοσεν αὐτοῖς ὁ θεός·

The time we spent traveling from Kadesh-barnea until we crossed over the Brook of Zered was thirty-eight years, until that entire generation of fighting men had perished from the camp, as the LORD had sworn to them.