LXX Deut 7:2

καὶ παραδώσει αὐτοὺς κύριος ὁ θεός σου εἰς τ·ὰς χεῖράς σου, καὶ πατάξεις αὐτούς, ἀφανισμῷ ἀφανιεῖς αὐτούς· οὐ διαθήσῃ πρὸς αὐτοὺς διαθήκην, οὐδὲ μὴ ἐλεήσητε αὐτούς,

and when the LORD your God has delivered them over to you to defeat them, then you must devote them to complete destruction. Make no treaty with them and show them no mercy.