Deuteronomy 12:29
When the Lord thy God shall cut off the nations from before thee, whither thou goest to possess them, and thou succeedest them, and dwellest in their land;
Cross-reference
Deuteronomy 9:3 describes God as a consuming fire destroying nations, fulfilling the promise that He will cut them off.
Deuteronomy 19:1 repeats nearly verbatim the condition 'when the LORD cuts off the nations' before dispossessing them.
Deuteronomy 18:9 warns against adopting the abominable practices of those nations, directly following the conquest instruction in 12:29.
Exodus 23:23 is God's earlier promise to send an angel to drive out these nations, which Deuteronomy 12:29 recalls.
Joshua 23:4 records the fulfillment of this promise, showing the land allocated after the conquest described in Deuteronomy.
Psalm 78:55 poetically retells God driving out nations and apportioning the land, echoing the same event from Deuteronomy.
Exodus 13:5 ties the land promise to the oath to the fathers, adding the 'milk and honey' description to the conquest context.