'Able to Stand' in the Bible

and the sons of Israel have not been able to stand before their enemies; the neck they turn before their enemies, for they have become a devoted thing; I add not to be with you -- if ye destroy not the devoted thing out of your midst.

Rise, sanctify the people, and thou hast said, Sanctify yourselves for to-morrow; for thus said Jehovah, God of Israel, A devoted thing is in thy midst, O Israel, thou art not able to stand before thine enemies till your turning aside of the devoted thing out of your midst;