Exodus 23:28-30

Leeser(i) 28 And I will send hornets before thee, and they shall drive out the Hivite, the Canaanite, and the Hittite, from before thee. 29 I will not drive them out from before thee in one year; lest the land become desolate, and the beast of the field multiply against thee. 30 Little by little will I drive them out from before thee, until thou be increased and canst possess the land.