NET

13 Get up! Ritually consecrate the people and tell them this: ‘Ritually consecrate yourselves for tomorrow, because this is what the Lord God of Israel has said, “You are contaminated, O Israel! You will not be able to stand before your enemies until you remove what is contaminating you.”

Darby

13 Rise up, hallow the people, and say, Hallow yourselves for to-morrow; for thus saith Jehovah the God of Israel, There is an accursed thing in the midst of thee, Israel: thou shalt not be able to stand before thine enemies, until ye take away the accursed thing from your midst.

KJV

13 Up, sanctify the people, and say, Sanctify yourselves against to morrow: for thus saith the LORD God of Israel, [There is] an accursed thing in the midst of thee, O Israel: thou canst not stand before thine enemies, until ye take away the accursed thing from among you.