13 “Go, consecrate the people. Tell them, ‘Consecrate yourselves in preparation for tomorrow; for this is what the LORD, the God of Israel, says: There are devoted things among you, Israel. You cannot stand against your enemies until you remove them.

Read Joshua 7:13 Using Other Translations

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.
Get up! Consecrate the people and say, 'Consecrate yourselves for tomorrow; for thus says the LORD, God of Israel, "There are devoted things in your midst, O Israel. You cannot stand before your enemies until you take away the devoted things from among you."
“Get up! Command the people to purify themselves in preparation for tomorrow. For this is what the LORD, the God of Israel, says: Hidden among you, O Israel, are things set apart for the LORD . You will never defeat your enemies until you remove these things from among you.