LXX Num 14:34

κατὰ τὸν ἀριθμὸν τῶν ἡμερῶν ὅσας κατεσκέψασθε τὴν γῆν, τεσσεράκοντα ἡμέρας, ἡμέραν τοῦ ἐνιαυτοῦ, λήμψεσθε τὰς ἁμαρτίας ὑμῶν τεσσεράκοντα ἔτη, καὶ γνώσεσθε τὸν θυμὸν τῆς ὀργῆς μου.

In keeping with the forty days you spied out the land, you shall bear your guilt forty years—a year for each day—and you will experience My alienation.