LXX Deut 31:16

Καὶ εἶπεν Κύριος πρὸς Μωυσῆν Ἴδου σὺ κοιμᾷ μετὰ τῶν πατέρων σου, καὶ ἀναστὰς ὁ λαὸς οὗτος ἐκπορνεύσει ὀπίσω θεῶν ἀλλοτρίων τῆς γῆς εἰς ἣν οὗτος εἰσπορεύεται, καὶ καταλείψουσίν με, καὶ διασκεδάσουσιν τὴν διαθήκην μου ἢν διεθέμην αὐτοῖς.

And the LORD said to Moses, “You will soon rest with your fathers, and these people will rise up and prostitute themselves with the foreign gods of the land they are entering. They will forsake Me and break the covenant I have made with them.