Deuteronomy 7:21-23

thou art not terrified by their presence, for Jehovah thy God is in thy midst, a God great and fearful.

`And Jehovah thy God hath cast out these nations from thy presence little by little, (thou art not able to consume them hastily, lest the beast of the field multiply against thee),

and Jehovah thy God hath given them before thee, and destroyed them--a great destruction--till their destruction;