The listing of the nations in Canaan (verses 19-21) serves to show that the promise is geographically and historically specific — not mythological or vague. Ten nations are named, representing the full scope of the territory. Their presence also signals that the fulfilment will require God's intervention on a large scale.
Memory phrase: God's promises are specific and real.
Talk about it: God named specific nations and specific lands. Why is it important that God's promises are specific and not just general?
Prayer: God, help me trust Your specific promises — not vague hopes, but real promises for real situations.