Deuteronomy 9:3-4

Therefore understand today that the LORD your God is He who goes over before you as a consuming fire. He will destroy them and bring them down before you; so you shall drive them out and destroy them quickly, as the LORD has said to you. “Do not think in your heart, after the LORD your God has cast them out before you, saying, ‘Because of my righteousness the LORD has brought me in to possess this land’; but it is because of the wickedness of these nations that the LORD is driving them out from before you.