The Preemptive Strike Against National Self-Righteousness — Deuteronomy 9:4-5

Don’t say in your heart, after Yahweh your God has thrust them out from before you, saying, “For my righteousness Yahweh has brought me in to possess this land”; because Yahweh drives them out before you because of the wickedness of these nations. Not for your righteousness, or for the uprightness of your heart, do you go in to possess their land; but for the wickedness of these nations Yahweh your God does drive them out from before you, and that he may establish the word which Yahweh swore to your fathers, to Abraham, to Isaac, and to Jacob. — Moses demolishes Israel's merit before they even set foot in Canaan — and names the real reason they're getting the land.