Deuteronomy 7:20

17 If you say in your hearts, These nations are greater in number than we are: how are we to take their land from them?

18 Have no fear of them, but keep well in mind what the Lord your God did to Pharaoh and to all Egypt;

19 The great punishments which your eyes saw, and the signs and the wonders and the strong hand and the stretched-out arm, by which the Lord your God took you out: so will the Lord your God do to all the peoples who are the cause of your fears.

20 And the Lord will send a hornet among them, till all the rest who have kept themselves safe from you in secret places have been cut off.

21 Have no fear of them: for the Lord your God is with you, a great God greatly to be feared.

22 The Lord your God will send out the nations before you little by little; they are not to be rooted out quickly, for fear that the beasts of the field may be increased overmuch against you.

23 But the Lord your God will give them up into your hands, overpowering them till their destruction is complete.